The Sellier & Bellot .300 Blackout Subsonic 200 grain FMJ is engineered for shooters who demand smooth, reliable performance in a training round. Built for subsonic operation, each cartridge is loaded with a 200-grain full metal jacket projectile that stays just under the speed of sound, making it an excellent match for suppressed rifles. When it comes to stocking up on ammunition, having reliable subsonic rounds on hand is a smart move. S&B’s 300 Blackout Subsonic FMJ gives shooters a cost-effective, high-quality option for quiet and accurate practice sessions without sacrificing performance.