Barnes Suppressor Series 300 AAC Blackout 205gr JHP Rifle Ammo - 20 Rounds - SUPPRESSOR SERIES is a purpose-built, subsonic ammunition line optimized for suppressor use, featuring premium Sierra projectiles loaded to Barnes' exacting standards. Barnes' subsonic loads utilize clean-burning propellants to reduce gas blowback, improve cycling in semi-auto platforms, and deliver noticeably quieter shots through suppressor-ready firearms. Features Made in the USA ; This load features the Sierra 205gr GameKing, designed to expand even at subsonic velocities-adding dependable terminal performance to the equation;