Specifically engineered for use with suppressed firearms, Barnes® .300 Blackout 220gr Subsonic OTM BT Precision Match Ammo is a match-grade centerfire rifle cartridge, engineered to deliver consistent performance and smooth operation when it matters most. Further, this centerfire rifle ammo features clean-burning subsonic powders and propellants, and non-corrosive boxer primers loaded in polished brass casings for superior reliability under stress and exceptional accuracy in virtually any environment. Better yet, this ammo boasts open-tip match boattail (OTM BT) bullets for ultra-flat trajectories and unparalleled long-range accuracy in any shooting application.