300 Whisper/Blackouts

[Hoser]

I have a few of the little Whisper guns. The latest being built by forum member AKA-Spook. This is the second 300 Whisper upper he has built for me.

I had this built with only shooting 125 Sierra Matchkings, 125 Speer TNTs and 125 Nosler Ballistic Tips supersonic in mind, no subs. Spook used a 14 twist Mike Rock barrel with a carbine length gas system. The gas block is a PRI adjustable. The upper is a rifle length VLTOR mono upper. The scope is a Schmidt & Bender 1-4 Short Dot in LaRue rings with a 3gunstuff cat-tail. The lower is an STI with a JP trigger (my only lower without a Geissele 2 stage) and Magpul UBR stock.

The brake is a Sure Fire, as is the can. Even with the can it is still pretty light.

I took it to the range and using Lake City brass, AA1680 and N-110 and 125 Sierras going the speed of heat, I was able to shoot several 5 shot groups under .5 inches at 100 yards. Even with this stout load, recoil was very mild. With the can the POI shift was very repeatable and recoil was still mild. The difference in hitting a steel plate at 300 yards compared to a 223 with any bullet weight was night and day.

http://i890.photobucket.com/albums/ac105/puebloshooter/DSC03402.jpg

http://i890.photobucket.com/albums/ac105/puebloshooter/DSC03406.jpg

http://i890.photobucket.com/albums/ac105/puebloshooter/DSC03403.jpg

http://i890.photobucket.com/albums/ac105/puebloshooter/DSC03404.jpg

[DFBrews]

Damn good looking gun. What kind of velocities are you shooting for?

[SA Friday]

Jealousy has made me hate you, and your little dogs too. OK, I lied. I like your dogs.

[smchop]

Heres one I have, running an 8" rock creek barrel. Haven't spent a lot of time with it but looking forward to it now that Hoser has me hooked up on brass, got a few projectiles and some powder. Running the factory Remington UMC 125's it was hitting 2238 fps. I've made a couple changes but this is how it started out. By far the best choice for an SBR.

http://i581.photobucket.com/albums/ss256/smchop/photo-1.jpg

[DSB OUTDOORS]

Nice pics Hoser. What that upper run ya if you don't mind me askin. You can PM me if you want. I'm looking for another upper.

[Hoser]

Nice pics Hoser. What that upper run ya if you don't mind me askin. You can PM me if you want. I'm looking for another upper.

Best bet is to get in touch with AKA-Spook.

[spyder]

http://i1108.photobucket.com/albums/h403/asrspyder/DSCN3972.jpg

[bogie]

This was deep sixed in a tragic boating accident. It still needs a stock and a good trigger. Not sure what else to do at this point, but I'll have to tell that to the fishes.
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[mikeh1911]

12.5 inch SBR 300 Blackout with Surefire 762 SS suppressor. On top sits a T1 Aimpoint with a PVS 18 behind it. I use 9.0 grains of H110 pushing a Hornady 208 grain Amax bullet just under 1000 fps when I'm trying to be quiet or 19.5 grains of H110 pushing a Hornady 110 grain Vmax bullet at 2274 fps when I want to go fast.

[MattR]

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