Sellier & Bellot's .300 AAC Blackout 200 gr Subsonic FMJ ammo is the correct round for getting maximum sound reduction from a rifle fitted with a sound suppressor. It's an excellent all-around load for recreational target shooting, training, and competition with your silencer-equipped AR-15. When you're looking for economically priced, high-quality factory-new ammo (not reloads!) with superb performance, reach for S&B 300 AAC Blackout 200 gr Subsonic FMJ. Brass case Subsonic load - 1,060 fps @ muzzle for most effective sound reduction from silencer Available in 20-round boxes or 1,000-round cases Manufactured in S&B's state-of-th Mfg: Sellier & Bellot