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babirl
05-17-2012, 03:49
(MODS: PLEASE EDIT at will!)

458S is also a "growth" round!

Way smaller group than 6.8/6.5/.300 lovers, but I know there are a few .458S owners, along w/ .450 and other "big-bore" AR owners/lovers out there.

I think it would be good to "contain" 458S discussions to here until site is recovered/enough interest generated. Seems I recall at least three 458S threads pre-2012?

B2


FWIW, I know the original 458S Forum got hacked/spammed/denial of service and is slowly recovering: http://458socomforums.com/index.php

It sucked and lost tons of info, same happened to the original 6.8 Forum, and "WE" are nearly the same situation here on CO AR-15... The "good" will persevere and float to the top!

Anyhow, for anybody frustrated getting approved on the current 458S Forum, my understanding is Marty is doing it from overseas/one-by-one/as available.

Hmm, Wilson Combat also just announced a deal w/ Marty and they're now producing a 458S rifle and stand behind it... Look for growth after the Red Jacket idjits on TV talked about the 458S. Regardless, seems it's taken on a life of it's own.

http://i69.photobucket.com/albums/i48/babirl/458SSizeMatters.jpg

http://i69.photobucket.com/albums/i48/babirl/SBR458cartrdiges.jpg

SideShow Bob
05-18-2012, 18:36
Have you checked out : Beyond556.com ?
Lots of 458 SOCOM discussion in the Big Bore subsection....
I need to take mine out shooting to re-sight it in. I did a site set change.
And I want to see how the 325 gr. FTX and 350 FMJ FN rounds shoot. I have been shooting 300 gr. SNHP and they seemed to group good until my front site came loose, forgot to lock tite it.

Wiggity
05-18-2012, 18:42
Does 45-70 count?

SideShow Bob
05-18-2012, 18:51
Only if it is an AR chambered in 45-70.......

babirl
05-18-2012, 23:45
Have you checked out : Beyond556.com ?
Lots of 458 SOCOM discussion in the Big Bore subsection....
I need to take mine out shooting to re-sight it in. I did a site set change.
And I want to see how the 325 gr. FTX and 350 FMJ FN rounds shoot. I have been shooting 300 gr. SNHP and they seemed to group good until my front site came loose, forgot to lock tite it.

Thanks and will do.

(For our real .45-70 brother, the cool thing about a 458S is it's nearly equivalent out of a AR carbine, even a SBR-version if I was so fortunate to own one...)

I haven't shot mine near enough either, but what a freakin' cool option in an AR platform! :) I'd expect the .450 guys smile just as big, but my heart went 458S just because of the projectile options and especially how/why it was created!

B2

FWIW, I'm "in" @ the new 458S Forum probably because I was on the deceased forum. Anyhow, think we have a few other 458 platforms in the state/area now and would like to help if I can.

babirl
05-26-2012, 00:09
Must be getting old and wimpy.

Working up H110 reloads today and 50+ rounds... Seems I have a bit of a tingly shoulder tonight. :) On the other hand, it was a bit breezy but nearly a perfect day w/ my son.

On a serious note, for ANYBODY reloading for the 458S: ANY Pressure Signs means your in dangerous territory and back off!

It's super easy to cross that boundary, most especially w/ the Barnes TTSX due to it's length making it a different animal. I definitely saw swipes @ 31.0 GR/MAX load... Certainly no need to ever push that projectile that hard.

Definitely a very cool option out of an AR platform and big holes leak more!

babirl
06-13-2012, 23:09
More big bore propaganda... They ain't "cheap" but sure are fun:

http://i69.photobucket.com/albums/i48/babirl/458Sbrassfetcherproof.jpg

ETA: Dupe pic removed


http://i69.photobucket.com/albums/i48/babirl/Shesaidtheyrekindofshortbutsurearewide.jpg

yankeefan98121
06-15-2012, 06:36
More big bore propaganda... They ain't "cheap" but sure are fun:

http://i69.photobucket.com/albums/i48/babirl/458Sbrassfetcherproof.jpg

http://i69.photobucket.com/albums/i48/babirl/458SSizeMatters.jpg

http://i69.photobucket.com/albums/i48/babirl/Shesaidtheyrekindofshortbutsurearewide.jpg

Seems like fun doesn't come cheap either way, so you might as well get a beast [Beer]

Wish I can graduate to the big boy club but funds are lacking

coloradoEMT911
06-23-2012, 11:01
this will be my next upper i build would love to do a complete gun but prolly just do an upper eto switch out with my .223.

RJ

babirl
07-13-2012, 01:09
Upper is a perfectly fine option and works well.

WARNING: It will build itself into a lower and accessorized! (It's that EBR thing... This "big bore" AR thing is addictive.)

I have some "special mags" I Dremel'ed half-moons into but not required for most loads. Soon to test are the "Lancer" mags.


B2

FWIW, Wilson Combat is now fully in the 458S game:

http://shopwilsoncombat.com/458-SOCOM/products/438/

(He fell in love w/ the 6.8 and now the 458S for hogs and general hunting purposes...)

Overall, I understand there is a barrel and muzzle device shortage industry-wide... Also, seems to be a shortage of the "generic" .458 300 GR projectiles.

The Barnes 458S-specific is perfect/not-cheap... Lot's of folks helped make it reality.

JVC
12-06-2012, 12:26
Newbie here. I'm thinking about purchasing a .458 SOCOM upper to mount on my Colt M4 lower. I've seen uppers from Wilson Combat and Rock River Arms. Does anyone have an opinion as to whether the Wilson product (~$1,200) is better and/or worth the expense of the RRA upper (~$800)?

Any guidance would be appreciated!

SideShow Bob
12-06-2012, 17:59
Get the RRA, use the cash that you save to get ammunition.
If you make it out to this:
http://www.ar-15.co/threads/72745-RANGE-DAY!!!-Group-BBQ!!!-FRIED-TURKEY-AND-SNICKERS!!!-December-9th!!!

Find me, I might let you shoot a round or two out my RRA ( and only charge you $5, [LOL] ) after I get it sighted in again.

Skullworks
03-29-2013, 22:31
As mentioned before - I been having a devil of a time finding suitable 458 slugs for reloading. - It may get so bad that I'll have to buy the BT-Sniper die set to swage 300gr JSP slugs from 40 S&W brass. Cause really - what else you going to do with 40 S&W brass, its too short to use in a real 10mm.

babirl
03-31-2013, 12:25
ETA: Slugs = Brass? If so, IM/e-mail me and I might be able to loan/trade/pay forward a few cases...


Hopefully the 45-70 Rem bulk bullets will return someday.

Not the cheapest, but specifically designed for the 458S and pure awesome: http://www.midwayusa.com/product/544442/barnes-tipped-triple-shock-x-bullets-458-socom-458-diameter-300-grain-spitzer-boat-tail-lead-free-box-of-50



A bit cheaper:
http://www.midwayusa.com/product/138115/combined-technology-ballistic-silvertip-hunting-bullets-45-70-government-458-diameter-300-grain-round-nose-box-of-50

http://www.midwayusa.com/product/1601214242/remington-bullets-45-70-government-458-diameter-405-grain-soft-point?cm_vc=subv1138115

http://www.natchezss.com/product.cfm?contentId=productDetail&prodId=HO4503&green=FA241200-293E-5893-ADCF-95ABEF9DF4B0&src=mbProd


No clue about these folks but the 300GR Rem bulk projectile was kind of the standard/generic starting point: http://www.huntingtons.com/store/product.php?productid=20128

SideShow Bob
03-31-2013, 19:14
ETA: Slugs = Brass? If so, IM/e-mail me and I might be able to loan/trade/pay forward a few cases...


Hopefully the 45-70 Rem bulk bullets will return someday.

Not the cheapest, but specifically designed for the 458S and pure awesome: http://www.midwayusa.com/product/544442/barnes-tipped-triple-shock-x-bullets-458-socom-458-diameter-300-grain-spitzer-boat-tail-lead-free-box-of-50



A bit cheaper:
http://www.midwayusa.com/product/138115/combined-technology-ballistic-silvertip-hunting-bullets-45-70-government-458-diameter-300-grain-round-nose-box-of-50

http://www.midwayusa.com/product/1601214242/remington-bullets-45-70-government-458-diameter-405-grain-soft-point?cm_vc=subv1138115

http://www.natchezss.com/product.cfm?contentId=productDetail&prodId=HO4503&green=FA241200-293E-5893-ADCF-95ABEF9DF4B0&src=mbProd


No clue about these folks but the 300GR Rem bulk projectile was kind of the standard/generic starting point: http://www.huntingtons.com/store/product.php?productid=20128


Sounds like he is talking bullets, though he refers to them as slugs.... And making .458 bullets out of .40 S&W brass ? I would think is a bit strange.

Edit: Actually found an article on this, they are using ,45 ACP cases to make .458 SOCOM bullets..... Whodathunk....

Author Topic: Making .458 bullets out of .45 ACP cases - 458 SOCOM ... (http://www.google.com/url?sa=t&rct=j&q=.40%20s%26w%20brass%20made%20into%20.458%20socom %20bullets&source=web&cd=2&ved=0CDgQFjAB&url=http%3A%2F%2F458socomforums.com%2Findex.php%3F topic%3D195.0&ei=z99YUYCmLfGEygH52oGwCw&usg=AFQjCNFwNhF00HyU6pvK20zujnqhWLYRwg&bvm=bv.44442042,d.aWc)


458socomforums.com › Reloading (http://458socomforums.com/index.php#c3) › Bullets (http://458socomforums.com/index.php?board=14.0)

babirl
03-31-2013, 22:16
Sounds like he is talking bullets, though he refers to them as slugs.... And making .458 bullets out of .40 S&W brass ? I would think is a bit strange.

Edit: Actually found an article on this, they are using ,45 ACP cases to make .458 SOCOM bullets..... Whodathunk....

Author Topic: Making .458 bullets out of .45 ACP cases - 458 SOCOM ... (http://www.google.com/url?sa=t&rct=j&q=.40%20s%26w%20brass%20made%20into%20.458%20socom %20bullets&source=web&cd=2&ved=0CDgQFjAB&url=http%3A%2F%2F458socomforums.com%2Findex.php%3F topic%3D195.0&ei=z99YUYCmLfGEygH52oGwCw&usg=AFQjCNFwNhF00HyU6pvK20zujnqhWLYRwg&bvm=bv.44442042,d.aWc)




458socomforums.com › Reloading (http://458socomforums.com/index.php#c3) › Bullets (http://458socomforums.com/index.php?board=14.0)



Hmm, I missed that one... Interesting and good to know but thankfully I'm set for a bit.

Also forgot to look for the Hornady 300GR bulk bullets but they're out there too. OP, I think there are some components for sale over on the 458S Forum.

Dave
04-01-2013, 09:44
So does the .458 use the same mags as 5.56? I'm guessing they just go in single stack instead of double if they do?

RRA says they have them in stock, and I have been wanting to get a hunting caliber upper for hogs. Just not wanting one that will blow a hole out the other side. But, a big bore is interesting for me in other uses.

SideShow Bob
04-01-2013, 18:57
So does the .458 use the same mags as 5.56? I'm guessing they just go in single stack instead of double if they do?

RRA says they have them in stock, and I have been wanting to get a hunting caliber upper for hogs. Just not wanting one that will blow a hole out the other side. But, a big bore is interesting for me in other uses.

No, they are not the same magazines, [Wink], there is a group of us wantiing MagPul to start making the special 10 round .458 SOCOM magazines so that after the mag limit goes into effect, we will still be able to buy them........

Dave
04-01-2013, 20:38
No, they are not the same magazines, [Wink], there is a group of us wantiing MagPul to start making the special 10 round .458 SOCOM magazines so that after the mag limit goes into effect, we will still be able to buy them........

So I actually just ordered 15 ten round .458 SOCOM pmags before I even knew I wanted an upper in that chambering? Damn, I'm good. [Coffee] So wants to help me convince my wife I need an upper for this?

SideShow Bob
04-06-2013, 11:14
Try stopping at King Soopers on your way home and pick her up a cheap bouquet of flowers about once a week or so for a couple of months, with a night or two out for dinner & a movie. Then, when your upper ships, send her to an afternoon session of pampering at one of those spa / massage places.

Dave
04-07-2013, 09:11
Actually I'm putting my order in today. :D Going to see if I can use the birthday defense. Plus, my grandmother is either going senile or thinks she is going to die soon. My usual birthday present of a $50 gift card for amazon or ebay turned into a $500 check. She is 94, but when I saw her last month she was still in great health.

babirl
05-11-2013, 01:03
Actually I'm putting my order in today. :D Going to see if I can use the birthday defense. Plus, my grandmother is either going senile or thinks she is going to die soon. My usual birthday present of a $50 gift card for amazon or ebay turned into a $500 check. She is 94, but when I saw her last month she was still in great health.



You know updates are expected... Not on the wife, she'll get over it (err, MAYBE), still hope and pray grandma is OK, but what's up w/ your 458S order?



Could be months from what I'm hearing even pre-panic/popularization, As I recall, I waited nearly 4-months for a basic RRA; on the other hand, can't remember if I bought in another panic period? [panic]


No matter, you'll love 458S and your "custom" 7-round/10-round mags will be just fine... They'll likely need some trimming/Dremel love if they're PMAGs.

B2

I'm thinking about adding a custom 1895 Marlin Guide Gun 45/70, .45-70 just because I can share projectiles and always wanted one... SShhh. DON'T tell CINCWIFE!

Dave
05-11-2013, 09:23
I've called RRA three times and each time I get told it's been bumped another 2 months. Biggest problem is BCG's, since they are waiting on a supplier for those they are making uppers and barrels for other calibers until they have a confirmation. One did mention that the uppers are being made and the barrel stock is on hand, but no set date on bolts. I'm getting a lower and another .458 upper from 10mm Man's Double D Armory in the industry partner section here.

Wife is over it, I took a temp job with a friend of hers that helped pay it off. Grandma is ok, but since she had to leave her house to move into a retirement community she's been down a bit, but getting better since she adjusted.

babirl
05-16-2013, 01:58
....

Wife is over it, I took a temp job with a friend of hers that helped pay it off. Grandma is ok, but since she had to leave her house to move into a retirement community she's been down a bit, but getting better since she adjusted.

Glad to hear and I believe my oldest living/now buried predecessor was 98... Wow, not sure I'll make 70, err even 60 at this rate...

As you well know, the whole industry is insane much less w/ these variants... [Rant1]

In the meantime, please ensure you get approved @ 458 Forums during your wait: http://458socomforums.com (http://458socomforums.com/) (Marty 'designer' has been hit/miss but that's the no-bull best place to get real answers/no trolls for 458S... Worth the wait.)

Only other thing I know is keep checking w/ http://www.sbrammunition.com/ (Marty approved) and Wilson Combat.

Dave
05-16-2013, 07:51
I've been trolling the 458 forums, getting some info and seeing where if at all ammo is. I'm on backorder at Wilson for some 300gr rounds. I did pick up some projectiles from MidwayUSA, 300gr lead free for the socom and some 45-70 350gr. Haven't found any brass though. I still need a press of my own as I have to go to a coworker of my wife's house to reload. So far it's a good trade, homebrews for reloading lessons. All I have to provide is dies and shell holders if he doesn't have them, and materials since so far he only reloads pistol rounds. But he just got a DPMS AR-15, so now he's going to want to do .223. I'll get him into upper swapping soon.

spyder
05-18-2013, 23:52
Huh... Well, I stepped in here a little too late... I just got done building a buddy a 458 upper. You can also use standard 30 round mags from your AR, you may have to modify them, but you can. In my endeavors, if you shoot the pointy bullets (<I'm so articulate), then most AR mags will work. I know that Pmags, and standard GI mags will with them anyway. If you use the flat nose shorty's, you want to put a slight rounded bevel in on the front of the mag. It is also nice to have the correct followers installed, although normal AR followers also work without a problem. Just my $.02. P.S. I have a nice new reamer, and gauges to build more........ he..... hehe.. heheheheheheheheh.....................

babirl
05-24-2013, 03:04
Huh... Well, I stepped in here a little too late... I just got done building a buddy a 458 upper. You can also use standard 30 round mags from your AR, you may have to modify them, but you can. In my endeavors, if you shoot the pointy bullets (<I'm so articulate), then most AR mags will work. I know that Pmags, and standard GI mags will with them anyway. If you use the flat nose shorty's, you want to put a slight rounded bevel in on the front of the mag. It is also nice to have the correct followers installed, although normal AR followers also work without a problem. Just my $.02. P.S. I have a nice new reamer, and gauges to build more........ he..... hehe.. heheheheheheheheh.....................

WTF and yeah?

I'd say your credentials are somewhat important after the "Red Jacket" 458S clown show... Trolling or are you Marty/Teppo approved much less even interested in the 458S/big bore ARs? Heck, even Rumore could vouch for you...

B2

Yeah, "we" have the mag thing figured out... [ROFL2]

spyder
05-24-2013, 16:49
WTF and yeah?

I'd say your credentials are somewhat important after the "Red Jacket" 458S clown show... Trolling or are you Marty/Teppo approved much less even interested in the 458S/big bore ARs? Heck, even Rumore could vouch for you...


Huh? I've built three... and by built I mean profiled, chambered, threaded, mounted the barrel extension, modified the extension, port opening, bolt face, and extractor, bla bla bla...actually... that is almost all there is to it...

Who is rumore?

babirl
05-25-2013, 00:42
Huh? I've built three... and by built I mean profiled, chambered, threaded, mounted the barrel extension, modified the extension, port opening, bolt face, and extractor, bla bla bla...actually... that is almost all there is to it...

Who is rumore?

spyder,

Apologies if I came across as a complete A-hole and not trying to be one... You obviously have superb machining/gunsmith skills, but what is your "458S knowledge" (in a good/honest way)?

Marty obviously still has interest in his "baby" and Tony Rumore/Tromix helped him prototype:

- http://www.teppojutsu.com/ (See 458 SOCOM FAQ #1; yes, his web skills suck)
- http://www.tromix.com/

Sadly, there's now a LOT of fiction vs. fact out there, especially after the on-going Red Jacket joke that put the 458S on a "national-level" awareness. 458S is one freakin' awesome AR variant and I'd hate to see anybody get screwed, much less screw it up or even hurt! (See my 6.8 SPC II thread for how bad things can go... ;))

As you obviously know, the 458S is quite versatile but you also have to be a bit pressure-sensitive reloading, ESPECIALLY with the SOCOM TTSX... Yeah, I helped fund that endeavor. ;)

I do hope you'll come join us on the 458 SOCOM Forum: http://www.458socomforums.com/ (Sadly, was hacked/crashed just as hard, maybe harder than this forum a couple of years ago/still recovering but there are a LOT of WAY more knowledgeable folks than me over there... Post up your work and I bet Marty will "approve" you too. )

Once again, no offense intended... My interest is keeping the 458S "pure" as Marty intended when he handed his mass production design to RRA, BW shot some hogs got involved eventually just like 6.8 and finally Teppo tooling was sent off to SBR/Buddy while he's out of country...

[Beer]

B2

SideShow Bob
05-25-2013, 08:48
Wow, though I was going to have to break out some popcorn and pull up a comfortable chair and watch the fireworks....[LOL]

Too bad we are so widely spread out across the state, or we could have a 458S meet & shoot.
there seems to be a cornucopia of knowledge for this platform here, and I would love to pick a few brains while sending large chunks of lead down range.

babirl
05-26-2013, 00:50
Wow, though I was going to have to break out some popcorn and pull up a comfortable chair and watch the fireworks....[LOL]

Too bad we are so widely spread out across the state, or we could have a 458S meet & shoot.
there seems to be a cornucopia of knowledge for this platform here, and I would love to pick a few brains while sending large chunks of lead down range.




I'm not a smart man -- We all get a bit crazy and stressed at times! [Whacko]

On the other hand, I'd love to keep "AR Big Bores" on track and no additional BS introduced.

B2

FWIW, PMAGs can be problematic/non-functional w/ the custom developed Barnes 458 TTSX loads w/out grinding out the upper rib... OTOH, GI Mags w/ the 30-sec Dremel half-moon job work mucho better. So far, unmodified PMAGs remain great for most anything shorter than ~2.10 - 2.13 COAL (TTSX is typically 2.250).

I can't vouch for any of the huge ~400-500 GR sub-sonic rounds nor suppressed anything.

Reminder TO ALL: If you're shooting a 458S and see flattening on your primers/see marks you're WAY too hot!

ETA: spyder what are your thoughts?

babirl
06-02-2013, 03:05
Midway has .458 300 GR Sierra Pro-Hunter bullets in stock: http://www.midwayusa.com/product/578501/sierra-pro-hunter-bullets-45-caliber-458-diameter-300-grain-hollow-point-flat-nose-box-of-50 . Not the cheapest I've seen/not bad, but if you need 'em Sierra is a good company/product... Rumor is there are more REM bulk bullets on the way, but they likely won't be much cheaper.

As always, use safe reloading practices but this projectile is basically the same as the 300 REM and Hornady... Unless you're at near max loads, it should be GTG. Reminder: Weigh your charges carefully as you're basically still dealing w/ magnum pistol powders and easy to get a bit hot even on these reloads and wasn't designed to run at high pressure like most AR rounds.

B2

ETA: Still waiting on spyder (http://www.ar-15.co/members/4478-spyder) to check in w/ additional 458S info... I'm always willing to help w/ cases/projectiles or whatever as the 458S is a very awesome AR variant but not one to be trifled with. Then again, I'm just a troll.

SideShow Bob
06-02-2013, 10:47
I picked up on a couple of boxes of the Hornadys a few weeks back when they were in stock.
http://www.midwayusa.com/product/699223/hornady-interlock-bullets-45-caliber-458-diameter-300-grain-hollow-point-box-of-50

babirl
06-14-2013, 00:33
I picked up on a couple of boxes of the Hornadys a few weeks back when they were in stock.
http://www.midwayusa.com/product/699223/hornady-interlock-bullets-45-caliber-458-diameter-300-grain-hollow-point-box-of-50


SideShow Bob - I recently came across, err found an unopened box of 50 Barnes .458 (458 SOCOM label) 330 GR "Banded Solids"/Moly marked I forgot I had... [Peep]


No BS, do you have any experience/info?

I imagine with Barnes quality and "banded solids" they'll be good for brown bears, buffalo, engine blocks and the occasional neighborhood squirrel... I love the custom 458S TTSX projectiles but I can imagine a 330 GR solid punching pretty deep and both designed for relatively low-velocity.

B2

In all seriousness, 100% legally purchased/owned but I haven't researched and certainly not smart enough to remember if these are part of the "armor penetrating/no future sales" of certain Barnes solids from our ever benevolent BATFE... Figured you might help a "brudder" out as sadly the 458S Forum is a bit lame currently.


ETA: I'm on so many "lists" I don't care... Still waiting on sypder's 458 SOCOM thoughts.

babirl
06-21-2013, 01:02
Huh? I've built three... and by built I mean profiled, chambered, threaded, mounted the barrel extension, modified the extension, port opening, bolt face, and extractor, bla bla bla...actually... that is almost all there is to it...

Who is rumore?


Still waiting...

babirl
07-11-2013, 03:54
Still waiting...

NO RESPONSE = Noted... [facepalm]

OK, I'm no expert, nor a photographer, but a SERIOUS reminder for anybody with a 458 SOCOM/reloading how easy it is to get way over-pressure w/ previously referenced "pointy bullets"...



http://i69.photobucket.com/albums/i48/babirl/458SOCOMLoadsBADPIC_zps4cec3106.jpg (http://s69.photobucket.com/user/babirl/media/458SOCOMLoadsBADPIC_zps4cec3106.jpg.html)


Both projectiles are 300 GR but please note the projectile length vs. case capacity... The custom 458S TTSX is nearly perfect/designed to expand even sub-sonic but it's WAY different than most .458 300gr loads!

As pictured, I did invest in getting the 458 Barnes TTSX manufactured... spyder please check in and where are your 458S builds?

Still willing to help...

B2

AKA-Spook
07-12-2013, 19:56
31415 here's a couple

AKA-Spook
07-12-2013, 20:06
31419another one,for real subsonic work

AKA-Spook
07-12-2013, 20:08
31421 this being the size thread some builders use for cans, I use a larger diameter.

AKA-Spook
07-12-2013, 20:11
31423socom , way left , with 2 lathe turned projectiles , the one thats not in the case makes a mess out of an elk.

AKA-Spook
07-12-2013, 20:28
31425 Striker barrel for a guy with LDS

AKA-Spook
07-12-2013, 20:32
31427458 on a Rem SA for a hog hunter in TX, He liked shooting those little boolets too.

AKA-Spook
07-12-2013, 20:37
http://i.imgur.com/fu5ZqdT.jpg

...and the most intelligent thing I can think of to do with a 458 case...neck it to .416 and shoot 450 Hornady's through a can.

Whos Marty?

Skullworks
08-03-2013, 16:03
I got my custom mold (http://www.accuratemolds.com/bullet_detail.php?bullet=46-350S-D.png) from Accurate built to fit my Magma Master Caster (http://www.magmaengineering.com/products/master-caster/). I just need to hunt down some gas checks. Also I can't find any LP mag primers anywhere.

Dave
08-04-2013, 16:34
So is 16" the only barrels available? I was looking around hoping to see an 18" somewhere. Maybe Spook can do one that long?

AKA-Spook
08-06-2013, 06:22
So is 16" the only barrels available? I was looking around hoping to see an 18" somewhere. Maybe Spook can do one that long?

Dave with a stiff load of RL-10x and a 350 gr bullet theres about 20 fps per inch to be gained out to 24"...kind of a diminishing return ?

Dave
08-06-2013, 08:00
Dave with a stiff load of RL-10x and a 350 gr bullet theres about 20 fps per inch to be gained out to 24"...kind of a diminishing return ?
OK, just wondering why I have only ever seen 16" barrels, and now I know why. (and knowing is half the battle!) I was actually asking because Bushmaster makes (or used to make) a 20" upper for their .450 "thumper" round, and was curious. I ordered a RRA .458 upper, but in my last talk with them they basically told me to stop calling, it's on indefinite backorder and I'll get it when I get it if ever. And, if I cancel my order I still have to pay a 20% restocking fee, even though there is no item to actually put back into their stock.

AKA-Spook
08-07-2013, 19:48
OK, just wondering why I have only ever seen 16" barrels, and now I know why. (and knowing is half the battle!) I was actually asking because Bushmaster makes (or used to make) a 20" upper for their .450 "thumper" round, and was curious. I ordered a RRA .458 upper, but in my last talk with them they basically told me to stop calling, it's on indefinite backorder and I'll get it when I get it if ever. And, if I cancel my order I still have to pay a 20% restocking fee, even though there is no item to actually put back into their stock.

Good intel Dave.
Note to self: Scratch the pencil dicks at RRA off the list of people to do business with.[Bang]

davsel
08-12-2013, 12:11
I ordered a Wilson Combat 458 SOCOM " Build Kit" (barrel, adjustable gas block, gas tube, BCG, brake) on 09 Apr 2013.
Here's the latest word:

We currently do not have an estimated time, we are severely back ordered with barrels. I checked to see where you were at on the back order list and you are 54th in line. It will still be several months wait.
Thank You for your patience.


[Bang]

Dave
08-12-2013, 12:45
I ordered a 458 SOCOM " Build Kit" (barrel, adjustable gas block, gas tube, BCG, brake) on 09 Apr 2013.
Here's the latest word:

We currently do not have an estimated time, we are severely back ordered with barrels. I checked to see where you were at on the back order list and you are 54th in line. It will still be several months wait.
Thank You for your patience.


[Bang]
Was yours with RRA as well? I ordered a full upper on April 7, 2013 and they haven't told me what spot I am in line.

davsel
08-12-2013, 12:50
Was yours with RRA as well? I ordered a full upper on April 7, 2013 and they haven't told me what spot I am in line.

Nope - Wilson Combat (fixed the original post)
I sent them an email asking for an update.
Hope it's worth the wait.

Dave
08-20-2013, 15:19
I just got my email from Wilson saying my .458 ammo was sent out yesterday. So by the end of the week I'll have 100 rounds of ammo and nothing to fire it through. [Bang] Might call to yell at RRA again soon.

SideShow Bob
08-20-2013, 19:23
. So by the end of the week I'll have 100 rounds of ammo and nothing to fire it through. [Bang] .

Life you will share your ammo, I'll share my 458S......... And I am free to go shooting this weekend......[Coffee]

What bullet weight and style did you order ?

Dave
08-20-2013, 20:43
300 gr hornady HP. Working this weekend unfortunately, and my next range trip has to include my PSL.

SideShow Bob
08-20-2013, 21:28
Dave,
Did you end up finding any brass and bullets to reload ? I've got dies and and a press, just need some imperial sizing wax.

Dave
08-21-2013, 09:30
No brass found yet, but I did grab a box of 50 projectiles from Midway. 350 gr TTX I believe. I've looked for bigger, but I don't see myself getting a suppressor anytime soon so heavier rounds in subsonic loads aren't a priority. I think Midway had some 500 gr round nose when I ordered, but those went out of stock about the same time as the rest.

davsel
08-21-2013, 11:38
Gunstop Reloading has new brass - not cheap, but available
http://www.gunstop.com/Store/Rifle%20Brass/Starline-%E2%84%A2-Brass/SLB-SU458S

SideShow Bob
09-22-2013, 13:33
For those of you here that are saving and or reloading for this caliber, please see my thread in the Ammo, Ballistics and Reloading section (Marked and Gouged Brass) to see if you are experiencing or have had a similar issue.

SSB.

Dave
10-10-2013, 22:38
Well, I got my upper in today. Complete surprise since I never got an email from RRA that it was coming. Kind of sucks since I had been planning to go to MI next week but now have reduced funds as I had thought this wouldn't be coming until next year with the way they talked when I called them.

Dave
10-29-2013, 10:36
What sights or scopes are you guys running on your big bore AR's?

SideShow Bob
10-29-2013, 16:34
What sights or scopes are you guys running on your big bore AR's?

Troy flip ups front and rear. So far I have only gotten them sighted dead on at 25 yards. And an EOTech EXPS-2 & 3x magnafier.
But then the Great Floods of 9/13 floated my safe down the Platte, I think it finally washed ashore in Nebraska........

I got a in stock notice earlier today from Exile Machine that they had Car-Bon 300 gr. JHP in stock, 100 boxes of 20 rounds. Went to order some, and it was all sold out......

davsel
04-15-2014, 09:58
After the almost daily email ads from Wilson Combat, I finally got an email from them about my 458 kit.
They wanted to know if I still wanted it, and needed to update my payment info.
It's been just over a year since I ordered it, and I may actually receive it soon
[Flower]

merl
04-15-2014, 10:12
I'm in "please wait" mode as well.

Gives time to collect components.

edit - holy shit, a tracking notice

Dave
04-15-2014, 16:31
Sounds worse than my RRA experience. I still haven't shot mine though, and it's on a DD Armory lower. No sights, and every time I wanted to I end up just going for pistol or taking my 5.56 one. Though now that I ordered a Burris AR-332 to have as a sight I don't have any more excuses and need to get out soon.

davsel
04-16-2014, 17:19
I GOT A SHIPPING NOTICE!
Now I just need to convince Jay to modify an upper for me.

davsel
04-24-2014, 10:38
My Wilson Combat 458 SOCOM billet upper is arriving today, so I'll have it all built tonight.
Now, I need to load up some rounds.
I have all the components, but before/while I blindly Google load data, where do yall prefer to get your load data for the .458?

merl
04-24-2014, 11:06
http://458socomforums.com
(not that I have bullets yet, was expecting more time between ordering the upper & delivery. Got brass though)

Dave
04-24-2014, 11:07
My Wilson Combat 458 SOCOM billet upper is arriving today, so I'll have it all built tonight.
Now, I need to load up some rounds.
I have all the components, but before/while I blindly Google load data, where do yall prefer to get your load data for the .458?
Nice!

All I have are factory loads right now, but I don't have a press either. At $3.50 each round I've been scared to go shoot them.

davsel
04-24-2014, 12:03
Nice!

All I have are factory loads right now, but I don't have a press either. At $3.50 each round I've been scared to go shoot them.

No kidding!

I was not able to find any factory loads a year ago when I ordered the build kit, but I did manage to find a couple hundred rounds of brass and bullets.
Even my reloads are going to be around $2.25 apiece.
Still can't wait to shoot it though.

SideShow Bob
04-24-2014, 17:10
Nice!

All I have are factory loads right now, but I don't have a press either. At $3.50 each round I've been scared to go shoot them.

PM headed your way.....[Tooth]

SideShow Bob
04-24-2014, 22:07
Brass from 300 gr. rated at 1950 FPS. A little over pressure ?

http://img.tapatalk.com/d/14/04/25/muqu3uty.jpg


Sent from my ass using re-fried beans.

Dave
04-25-2014, 08:07
Doesn't look too bad, not sure how it would affect the ability to reload it though. Maybe you should post it or a link to here in the reloading thread to get some extra opinions. The 300 gr rounds I have are rated to 1800 fps instead of 1950.

The others I have are 400 gr, and all of mine are JHP. I have been thinking about the heavier ones as hunting rounds, but last night I got to thinking that most 400 gr+ rounds are slower (1500 FPS range) and I was worried that this might affect accuracy at longer distances since it might drop more past 100 yards than a faster 300 gr round. Anyone have thoughts on it?

davsel
04-25-2014, 10:09
Just using a quick online ballistics calculator,
300g, .302bc, 1800fps = -12.5" at 200 yards with a 100 yard zero
400g, .302bc, 1500fps = -18.6" at 200 yards with a 100 yard zero

Personally, I don't anticipate needing more than 300g to take down anything in North America within 200 yards.
I plan to use the >350g bullets for primarily subsonic purposes.

Dave
04-25-2014, 11:37
Just using a quick online ballistics calculator,
300g, .302bc, 1800fps = -12.5" at 200 yards with a 100 yard zero
400g, .302bc, 1500fps = -18.6" at 200 yards with a 100 yard zero

Personally, I don't anticipate needing more than 300g to take down anything in North America within 200 yards.
I plan to use the >350g bullets for primarily subsonic purposes.
Yeah, that's a hell of an extra drop at 200 yards. Might rethink my choices. Been getting different rounds mostly because I've just bought as I get emails saying something in .458 is available.

What calculator are you using? Is it online or one you have downloaded?

MarkCO
04-25-2014, 12:02
At least with the .450BM (should be similar) as long as I keep about 1300 fps with the heavies, the accuracy stays pretty much straight MOA. I hope to be tossing 300s and 320s arond 2400 to 2500 or so in a few weeks once I get the .450 BM/C all dialed in.

davsel
04-25-2014, 12:08
I just Googled "ballistics calculator" and chose this one:
http://www.federalpremium.com/ballistics_calculator/

I was just guessing on the bc for those two rounds.
It would be an even greater spread if you are using pointed 300g (Barnes Tac-TX) vs. flat nosed 400g.

davsel
04-25-2014, 12:22
I loaded up my first 10 rounds last night and plan to set them off this evening.
Hodgdon BL-C(2) is the only powder I have on hand that I could even find loading data for the .458 SOCOM.
I also only have standard large pistol primers - not magnum.

I extrapolated from a few different charts and came up with this as a first go:

48g BL-C(2)
CCI 300
350g Hornady InterLock flat nose

SideShow Bob
04-25-2014, 15:17
Maybe you should post it or a link to here in the reloading thread to get some extra opinions.

Already did awhile back, it didn't get very many responses. I was just wondering if this was an RRA bolt/upper problem, or just an over pressure problem.

https://www.ar-15.co/threads/116051-Marked-And-Gouged-Brass

davsel
04-25-2014, 17:31
Now, that was fun!
Just lobbed 3 rounds down range, got the scope sighted in.
Ran flawless, no signs of over-pressure.
I'll save the rest for tomorrow when my buddy brings up his chronograph.
I like it!

davsel
04-25-2014, 18:21
Well, upon further inspection, I may have found an issue with this $300 billet upper.
Here's a copy of what I just sent to Wilson Combat:


I recently purchased your .458 SOCOM Billet upper. I fired 3 rounds today and upon inspection, I noticed a couple of silver specks in the top of the ejection port. I scraped at them with my fingernail, and they got bigger.

Does this billet upper have machining done to the ejection port after anodizing and then simply painted black?

I'll wait to see what they say before getting excited.
I assumed the .458 billet upper they are selling would have been machined before anodizing - they even have ".458 SOCOM" engraved into the left side of it.
I even have one of Jay's uppers just sitting on a shelf - didn't want to have it machined and then painted over.
[Mad]

ray1970
04-25-2014, 18:51
Well, upon further inspection, I may have found an issue with this $300 billet upper.
Here's a copy of what I just sent to Wilson Combat:

I'll wait to see what they say before getting excited.
I assumed the .458 billet upper they are selling would have been machined before anodizing - they even have ".458 SOCOM" engraved into the left side of it.
I even have one of Jay's uppers just sitting on a shelf - didn't want to have it machined and then painted over.
[Mad]

You should see the finish on the shell deflector on my 300. Those short cases dinged most of the finish off in the first hundred rounds. Is something similar happening with the 458 cases?

SideShow Bob
04-25-2014, 20:19
Well, upon further inspection, I may have found an issue with this $300 billet upper.
Here's a copy of what I just sent to Wilson Combat:

I'll wait to see what they say before getting excited.
I assumed the .458 billet upper they are selling would have been machined before anodizing - they even have ".458 SOCOM" engraved into the left side of it.
I even have one of Jay's uppers just sitting on a shelf - didn't want to have it machined and then painted over.
[Mad]

Can you post up a picture ?

I have just under 100 rounds thru my RRA and there is no finish flaking off, some brass color transfer but no flaking.

Dave
04-25-2014, 21:23
Yeah, I'd be pissed if 3 rounds took the finish off an upper. Can you measure the ejection port and see if it was opened up enough? Even if it isn't I can't imagine brass being able to nick up anodizing or cerakote.

davsel
04-25-2014, 21:24
I'll try to post a pic Monday - no camera this weekend.

It came off along the inside upper sharp edge of the port - about 1.5 inches worth in the middle of the opening. It also came off where the port door pin rubs when closing the door. It appears they machined the top of the port - like you should (but they did it after anodizing), and then painted over the exposed aluminum with something that does not stick well. I haven't even put solvent through it yet. There are no dents or dings in the metal - yet.

I realize it is purely cosmetic, I just think I should have gotten something a bit more durable for the money.

10mm-man
05-10-2014, 00:17
I'll try to post a pic Monday - no camera this weekend.

It came off along the inside upper sharp edge of the port - about 1.5 inches worth in the middle of the opening. It also came off where the port door pin rubs when closing the door. It appears they machined the top of the port - like you should (but they did it after anodizing), and then painted over the exposed aluminum with something that does not stick well. I haven't even put solvent through it yet. There are no dents or dings in the metal - yet.

I realize it is purely cosmetic, I just think I should have gotten something a bit more durable for the money.

Update?

davsel
05-10-2014, 00:31
Sorry, haven't taken a pic yet.
Wilson Combat has chosen not to respond.

10mm-man
05-11-2014, 00:07
Sorry, haven't taken a pic yet.
Wilson Combat has chosen not to respond.

Bummer! I want to shoot it! lol

I am thinking that I want to build one my self; might have to run some....

Dave
05-11-2014, 07:36
I'd like to get together and compare my RRA upper to the Wilson and see what the differences are. My upper is sitting on my DD lower that I had originally had setup for a 24" 5.56 project that is still having to wait. So it has a Mako monopod buttstock that keeps me on a longer LOP. Should still work for my hog hunting desires.

10mm-man
05-11-2014, 19:31
I'd like to get together and compare my RRA upper to the Wilson and see what the differences are. My upper is sitting on my DD lower that I had originally had setup for a 24" 5.56 project that is still having to wait. So it has a Mako monopod buttstock that keeps me on a longer LOP. Should still work for my hog hunting desires.

Are you saying your going to hog hunt with the 458 Socom?? Holy shmoly!!

Dave
05-11-2014, 19:38
Are you saying your going to hog hunt with the 458 Socom?? Holy shmoly!!

Yep. Saw people using a 45-70 for some bigger ones so I figured this would work.

davsel
05-12-2014, 20:54
Here's the pics of my Wilson Combat .458 SOCOM upper after firing 10 rounds.
I noticed some silver shining along the edge of the ejection port and scratched at it with my fingernail.
I'm sure the rest would come off in just a few minutes with my fingernail.
Wilson Combat still have not replied to my email.

4468144683

Dave
05-12-2014, 21:10
Yeah, I can't imagine that's right. Maybe the surface wasn't prepped right for the coating?

davsel
05-13-2014, 09:39
I sent another message to Wilson Customer Service and they replied asking for pics.
I sent them off - we'll see.

ETA:
Here's their reply:

David, I spoke with our Rifle gunsmith and he informed me that with the .458 socom being as large of a round as it is that it can actually do that in the situation you are referring to. It is the nature of that round being so large. I believe it is caused by the .458 socom maximizing all the available space in the AR-15 platform. Our gunsmith did recommended turning down the gas block a small amount in order to minimize damage. Be sure to let us know if there is anything else we can help you with. Thank You


I replied by restating that the "damage" came from my fingernail, and asking whether the port is anodized or painted.

davsel
05-13-2014, 11:15
Ok, here's the latest reply from Wilson Combat.
Notice, it does not state whether or not I will have to pay for the new coating, but I believe it should be covered by Wilson.

What do yall think I should do?


David, If it was a stripped upper that was bought from us it is anodized. We usually suggest going with our armor tuff coating as anodizing can wear with any usage and the Armor tuff has a better resistance to wear. Every coating will wear it just depends on the amount of contact as to how fast it will wear. Anodizing is not as tough as the Armor tuff we offer but, we do offer to have the upper Armor Tuff coated if you would like. Please let us know how you would like to proceed. Thank you

davsel
05-14-2014, 14:30
After stating that I have never seen this happen on an upper receiver and asking to have the coating done free of charge, Wilson sent this:

It is not that it will happen with every type of caliber of upper. It will indefinitely happen on the .458 socom as it is an extremely large caliber for the Ar-15 Platform. I do apologize for the coating issue. We do offer to coat the upper for a charge of $50. Please let us know if this would assist you as I believe the coating is going to wear in this area especially with .458 Socom. Thank You

I sent another email to the head of Customer Support restating the issue.

Side Note: Wilson Combat offers a 10% discount on most of their stuff to LE and Military (active and retired). Had I noticed that (hidden somewhere in their website), I would have used it when ordering $890 worth of .458 SOCOM parts in the first place. Now they want an extra $50 plus shipping to fix a problem they created. I also noticed that they put it in writing that they do not provide a written warranty.

Dave
05-14-2014, 21:36
Ugh, sounds like crap from Wilson. If you have it recoated keep it local, I have to think there's a place in COS that can do it right instead of giving more money to Wilson.

davsel
05-15-2014, 15:34
Well, I have to give credit to Wilson Combat Customer Service Manager, Tressa Bohannan.


Tressa Bohannan
3:13 PM (2 minutes ago)
Reply
to me

In order to modify these into .458 we must cut through the hard anodize and then armor tuff the upper. We will refinish it at no cost, however that area will show wear after some use. This is normal wear the ammo will bounce off the port. Please send it back to us for a refinish.

I have also marked your account with the LEO. I have also re-invoiced your orders and refunded your card the 10%. $54.99 on one and $28.99.

I am indeed 110% satisfied, as their website suggests.

jerrymrc
05-15-2014, 19:35
Have no idea what there "Armor Tuff" is but since it flaked off with your fingernail.... I have items painted with Duplicolor single stage baked that have had 1000's of rounds bounced off it and it is still there.

If it does it again you buy the material and I will Cerakoat it for free. [Flower]

Dave
05-16-2014, 07:31
Good to hear they are making it right with you. Hope it gets fixed right and that they use this lesson to make sure it doesn't happen again.

davsel
05-16-2014, 07:43
Have no idea what there "Armor Tuff" is but since it flaked off with your fingernail.... I have items painted with Duplicolor single stage baked that have had 1000's of rounds bounced off it and it is still there.

I think the "Armor Tuff" is probably pretty good stuff. However, they failed to properly prep - according to their own website (http://wilsoncombat.com/new/custom-gun-finishes.asp):

Before a firearm is coated with ARMOR-TUFF® the firearm is thoroughly sand blasted with fine grit media, then carefully dehorned and every surface prepared by hand. Every carbon steel firearm is phosphate parkerized before we apply the final finish to form a bonding surface for ARMOR-TUFF® that increases durability and corrosion resistance.
I believe all applied coatings tend to fail on sharp corners and polished surfaces. The first silver nicks I noticed were on the sharp 90 degree edge along the inner top of the ejection port. I was then able to flake it off, and the aluminum underneath appears to be freshly milled, almost polished. I included this information in my return "Thank You" email. I'll wait to see if they follow their own advice the second time around.

davsel
05-20-2014, 19:49
Sent the upper back yesterday.
Gives me time to load some more bullets.

babirl
05-24-2014, 00:27
Sorry, haven't taken a pic yet.
Wilson Combat has chosen not to respond.

Shocking... Regardless, I'm sure it will be made OK by Wilson... Eventually.

Good news is T. Rumore/Tromix is back helping SBR and the 458S backlog... Rumor is SAAMI specs are close. Regardless, ENJOY any version of a 458S you have that works as it's pretty much fun/awesome!

MODS -- I'm all about a 2012 OUT/ LOCK so Some pro can start a 458S thread that's updated w/out the stupidity...

B2 - OUT

davsel
06-09-2014, 14:13
Just got the call from Wilson Combat letting me know they have bead-blasted and refinished the upper, and are sending it back to me today.
Still wish they would have anodized after milling the ejection port, but the Armor Tuff coating they apply is supposed to be good stuff.
I'll see.

davsel
06-18-2014, 12:08
Got the upper back all fresh and new. Assembled it, and put 10 rounds down the barrel.
Not a mark on it this time.
+1 Wilson Combat customer service (manager).

Dave
06-18-2014, 13:24
Glad they made it right for you. Hopefully they learned what they need to do for these from now on.

davsel
09-21-2015, 09:24
Bumping the thread back to the top of the "'other' caliber uppers" forum.
http://www.furfishgame.com/_assets/images/featured_articles/new_products/2012/2012-10/RockRiverClip.jpg

KS63
09-21-2015, 18:45
I wouldn't mind one of these for Texas Hogs. What's the recoil like?

davsel
09-21-2015, 20:06
More than a .223, much less than a .308.
That's with 300 grn at about 1800 fps.
It's really more of a shove than a sharp rap (45 acp vs. 40)
Not bad at all.

20 gauge auto perhaps.

Always a difficult question to answer.

Dave
10-15-2015, 08:33
Yeah, I'd say mine with 350 grain rounds feels about the same as my Mossy 5XX pump action in 20 gauge. I really want to get back down to TX and try mine out on some hogs.

SideShow Bob
06-24-2017, 08:07
Bringing out the dead.....

Duman
07-02-2017, 20:04
I've been thinking about a 458S for awhile, I'm interested in hearing about how it performs on hog hunts, etc..

haygre
02-04-2018, 10:31
Sorry to throw in a non sequiter, but my next build is going to be a 458 SOCOM. There does not seem to be a plethora of sites to get parts for my build. Can someone give me some more input without breaking any rules about retailer recommendations. I've found parts at JSE, Primary Arms, KM Tactical, Brownell's, and Surplus Ammo, and that's about it.

SAnd
02-04-2018, 13:16
Tony Rumore / Tromix was the production part of the team that developed it.

https://tromix.com/

Very good people to do business with.

whitewalrus
02-13-2018, 20:20
Sorry to throw in a non sequiter, but my next build is going to be a 458 SOCOM. There does not seem to be a plethora of sites to get parts for my build. Can someone give me some more input without breaking any rules about retailer recommendations. I've found parts at JSE, Primary Arms, KM Tactical, Brownell's, and Surplus Ammo, and that's about it.

Wilson combat is nice, but pricey.

20X11
02-15-2018, 22:14
Just jumped into 458 socom.... upper, barrel, bcg, etc on the way. PLUS all the necessary reloading items. Wish rcbs nade a 3-way trimmer setup for this caliber, but ai can't find one? WTF

Squeeze
03-04-2018, 00:12
I'm now contemplating building an upper in this cartridge as well. From everything I've read, Tromix is really the best option in regard to barrels. Second to that would be RRA. I see Brownells offers a barrel in 458S, but so far no reviews on it. Once I pull the trigger on getting the barrel from Tromix, I'll start to piece together everything else. Reloading dies will likely be on my next Midway USA purchase as well.

I saw someone else had asked what optics people are running on their 458S rifles. I too am curious about that (excluding irons of course). I was thinking of going with a Vortex Spitfire 3x Prism with EBR reticle.

From all the research I've done, it looks like this cartridge really took off. This thing is gonna be a fun to sight in at BlueCore with a muzzle brake on it. [Evil]

Marine24
03-04-2018, 07:37
Definitely will make an impression in an indoor range.

I run a SWFA 1-6x scope on mine and it is a perfect combination for me.

20X11
03-04-2018, 10:28
I see Brownells offers a barrel in 458S, but so far no reviews on it. ]

Reading on the 458SOCOM forum, Brownells (Satern) licensed the reamer from Marty (orignal designer of the 458S) so should be GTG. Wilson Combat and Radical went with a reverse engineered reamer from PTG, so they are frowned on a bit. I was hoping to try our the Radical barrel this weekend, but wind kept me away from the range.

davsel
03-04-2018, 11:09
I'm now contemplating building an upper in this cartridge as well. From everything I've read, Tromix is really the best option in regard to barrels. Second to that would be RRA. I see Brownells offers a barrel in 458S, but so far no reviews on it. Once I pull the trigger on getting the barrel from Tromix, I'll start to piece together everything else. Reloading dies will likely be on my next Midway USA purchase as well.

I saw someone else had asked what optics people are running on their 458S rifles. I too am curious about that (excluding irons of course). I was thinking of going with a Vortex Spitfire 3x Prism with EBR reticle.

From all the research I've done, it looks like this cartridge really took off. This thing is gonna be a fun to sight in at BlueCore with a muzzle brake on it. [Evil]

You mention building an upper for this cartridge. Don't forget, you will need a modified lower as well - the ejection port needs to be opened up.

I run a Burris XTR 1-4 on mine, and my Wilson barrel is good to go.s

Good luck with the build, you will enjoy it.

SideShow Bob
03-04-2018, 11:41
You mention building an upper for this cartridge. Don't forget, you will need a modified lower as well - the ejection port needs to be opened up.

I run a Burris XTR 1-4 on mine, and my Wilson barrel is good to go.s

Good luck with the build, you will enjoy it.

Ummm....... The ejection ort is on the upper.......

davsel
03-04-2018, 13:32
Ummm....... The ejection ort is on the upper.......

Ummm.... I'm a complete idiot! Thanks for pointing that out.

MarkCO
03-04-2018, 15:01
My big bore is a .450BM (and a .450 Corvette Upper) and I have a Burris XTR 1.5-6 on one and a MTAC 1-4 on the other. I think anything in the range 1-4 to 2-7 is a good fit for the 45 caliber ARs.

Squeeze
03-05-2018, 10:17
You mention building an upper for this cartridge. Don't forget, you will need a modified lower as well - the ejection port needs to be opened up.

I run a Burris XTR 1-4 on mine, and my Wilson barrel is good to go.s

Good luck with the build, you will enjoy it.

Okay, Dave, no more replying on the forum when you haven't had enough sleep. LOL! Just to clarify, I will be using an Anderson Arms upper specifically designed for the .458 Socom.

cfortune
03-12-2018, 15:16
I got a wild hair up my ass and ordered a Tromix 458 upper. Judging by the barrels they sell, I'm guessing I ended up with a 1 in 14 16.25 barrel. Any good resources on loading subs or load data in general? Preliminary research shows for the heavy stuff I should have gone with a faster twist. Most consolidated load data I'm finding is based on 300 - 325 grain pills though. Hoping I can push some 500 grainers through it but I won't be heart broken if I can't.

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SideShow Bob
03-13-2018, 08:18
Here is a link to some data on loads for the Hornady 325 gr. FTX pill, from a reliable .458 SOCOM source :

http://www.teppojutsu.com/downloads/458_socom_quickload_325_ftx.pdf

Squeeze
03-14-2018, 19:48
Any idea on what weight carbine buffer you use for a .458 Socom?

20X11
03-14-2018, 19:52
Standard carbine buffer

Squeeze
03-14-2018, 20:32
Standard carbine buffer

Thank you 20X11!! I happen to have a couple of those laying around in my spare parts box.

davsel
03-14-2018, 21:04
I purchased my build kit from Wilson Combat and it includes a heavier buffer spring and an adjustable gas block - Runs flawlessly once it is tuned.

Squeeze
03-28-2018, 12:17
Once I get the Tromix barrel, the muzzle brake, and BCG, my .458 build will be complete.

20X11
03-28-2018, 12:24
I had mine out again last weekend...absolute FUN!!! All my reloads functioned perfectly.

cfortune
03-28-2018, 15:42
I had mine out again last weekend...absolute FUN!!! All my reloads functioned perfectly.Was hoping to get some first rounds through mine this weekend. Dies and such won't be here in time though.

What powder are you using? I picked up some lil gun and some 350 grain pills.

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20X11
03-28-2018, 19:47
Was hoping to get some first rounds through mine this weekend. Dies and such won't be here in time though.

What powder are you using? I picked up some lil gun and some 350 grain pills.

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For Nosler 300gr BT, I used 300 MP per their published load data. For Barnes 300 gr TTSX, I used A1680 per their published load data.