Wondering if anyone has experience with a 10.5 inch AR 10? It appears that 10.5 inches of barrel is not great for .308, but wondering if anyone has one or has shot one and what they think.
Printable View
Wondering if anyone has experience with a 10.5 inch AR 10? It appears that 10.5 inches of barrel is not great for .308, but wondering if anyone has one or has shot one and what they think.
No experience but I bet it will make a fireball the size of a Volkswagen.
Based on my research (which may possibly be incomplete/inaccurate) anything shorter than a 12.5" barreled .308 didn't make much sense ballistically, and all around better/cheaper options would be available in an AR15 frame...
I used to have a 13.7" AR10 (w/ pinned brake) which was really nice and shot well, and was planning to build a 12.5" .308 and welding a F1 reflex can on the end of it, but have decided to pass on that build for now...
The 12.5" should be more solid from a velocity perspective, and have better barrel harmonics and be every bit as accurate as something longer (prior to transsonic velocity threshold which will be hit sooner ala reduced MV, hence a reduced effective range)...
Not exactly what the OP referenced, but hopefully at least a little helpful...
Sent from my SM-N920T using Tapatalk
Hybrid flame thrower/pistol combo?
I say go for it.
But you have to figure, being a bit of a money-hose is what a 10.5" .308 is likely to be best at, so if that's the build-spec, might as well unleash the awesome while you're at it!
Sent from my SM-N920T using Tapatalk
I’d be curious to see some 308 ballistics out of that barrel compared to the same bullet weight in something like a 300 Blackout.
I did get to fire a few shots from a 30-06 pistol once. I wasn’t really kidding about the Volkswagen reference earlier. Powder burning beyond the barrel can be pretty impressive.
Fireballs from the end of a barrel are cool.
If you're unarmed, you are a victim
The SBR in that pic is actually a 5.56 w/ linear comp...
If memory serves, I recall the ballistics for a .308 with that short of a barrel being pretty close to a 300BO (which is going to be all-around cheaper to build/run, and way lighter), particularly with lighter (supersonic) bullet weights....
That said, it's always possible that I'm mis-remembering or otherwise have some error/miscalculation in my understanding (its been a while since looking into this)...I know that a number of our members have far greater knowledge in this area than my own, and hopefully someone can chime in on-topic if my above statement is incorrect...
Sent from my SM-N920T using Tapatalk
I have the parts to assemble one some day, when I get some free time, but I haven't gotten there yet. I bought a 12.5" Noveske Leonidas bbl right around when they first introduced the project/idea, and it's still sitting in the wrapper in the parts cabinet.
.308 Pistol
https://www.youtube.com/watch?time_c...&v=EUx7Rqtv5zo
Another helpful article that sheds some light on short barrel .308.Quote:
Originally Posted by Noveske
https://rifleshooter.com/2016/02/308...-308-bolt-gun/
My vote? Build one!
While a 308 pistol would be a fun toy, keep this in mind:
10" barreled AR10 pistol OAL =
18" barreled Keltec RFB OAL
Both just over 26"
Yes, but then you have to admit you own a Keltec, and that advertising like this worked on you...
https://3.bp.blogspot.com/-1Dx5KmlaH...0/IMG_0675.jpg
Sorry, couldn't resist...
Velocity based on barrel length is a linear relationship. Very predictable. This site is a good representation of velocity vs barrel length.
https://rifleshooter.com/2014/12/308...ty-28-to-16-5/
Basically, You are getting into 300 Blackout with a 10.5-12.5" barrel. Waaaaaaaaaaaay cheaper to build yourself a Blackout.
I think I've decided away from such a short barrel. I think I wouldn't mind a pistol build of around 12 to 13 barrel in .308, but I think I'm gonna head down the 300 Blackout road first. It seems like a better way to go and I know members on this very board have hunted elk with one.
I thought of this... (but it's even more extreme in length)
Attachment 73582
Honestly, I don't see the reason for having such a short .308. I've got a 16" bbl 308. Honestly, it took a long time for me to even accept a .308 in this short of a barrel. If you're just looking for something fun that kicks more than your average ar-15, then by all means, go for it. I couldn't justify that much of a performance drop from a .308. As stated by others, if you drop the barrel length that much, it's closer to a 300 blk in performance, which is lighter, cheaper, and able to suppress much easier. I have a 5.56 AR in a 12.5 inch barrel and I love that.