300BlkTalk

Pistol length gas S&B 220 grain subsonic ammo. Pinned gas block from the factory. I may grab some supers and send them through, to check function, & help break in the system and spring. I have two of them built identically, mine will have a suppressor on it, pretty sure it will be fine, but ...

I have a Thunder Ranch receiver set build with a Ballistic Advantage 10.3” barrel and an Aero Nickel Boron Bolt. The bolt won’t lock back on a one round ammo test. Now, I should point out, I’m using subsonic ammo and no suppressor. The reason is simply for safety on over penetration. This is for my ...