h110

Okay .300 AAC Blackout loaders...I made up a box of rounds using 120gr Powerbond bullets, 14.7gr H110, S&B SRP, seated to 1.900”. They fired and cycled well through a new build 7.5” AR Pistol, as well as my previous 10.5” AR Pistol. Loaded from multiple magazines, shot well, bolt lock back every...