Looks line a necked up 308 case for .375.
They are claiming 270g pill traveling at 2,200fps from a 12" barrel
All from an AR-10 platform
They are claiming 270g pill traveling at 2,200fps from a 12" barrel
All from an AR-10 platform
375 Raptor - Black Collar Arms
Modern Versatility 375 Raptor is the best short action / AR-10-length cartridge for firing both high BC, supersonic hunting and target shooting projectiles as well as heavy, accurate subsonic projectiles. Efficient powder burn in the .375 bore provides phenomenal performance from short barrels...
blackcollararms.com