300 Blackout SBR

The 300 Blackout Project is finally complete.


This rig is now tuned up exactly the way I wanted it. The sub-sonic 300 Blackout is the perfect round for suppressing. The huge can does not ruin the balance on this rig and it is so quiet.

Now I need a case or two of ammo.

--Zombies beware.

4 comments:

Unknown said...

When do we go to the range?

JB Miller said...

Soon...

Went with the wife last night. So sweet.

Murphy's Law said...

Very nice indeed. Bring it up this way sometime and I'll bring mine. We can have a quiet shoot-out at the range.

Marcel said...

From right to left, the first is a standard .223 Remington for a size comparison. Next is the 300 Blackout, then a .338 Whisper round that launches a 300 grain rock downrange at 1050 FPS. I also load these with a 200 grain bullet and raise the charge to send it downrange at about 2200 FPS. Next is .458 SOCOM. These are loaded from subsonic 500 grain rock throwers to over 2000 FPS ballistic tipped 325 grain bullets. These have become quite popular with hog hunters and they run on the AR15 platform with little more than a barrel change.

Next is one of the .510 Whispers with a 50 cal BMG API rock stuffed in. 28 grains of H110 powder sends it along its subsonic journey into a hard target. A nice report and big smiles from the shooter erupts.

Last is another 510 with a Lehigh Defense, controlled fracture, payload bullet. These machined brass projectiles have slots cut in for the petals to expand. Also in the nose is a .243 cal ballistic tipped bullet to shift the CG forward to improve flight characteristics.

I'm glad that you appreciated them. I enjoy sorting this stuff out and it's nice when someone appreciates it.


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300 Blackout for hunting