Sellier & Bellot 300BLKSUBA Rifle 300 AAC Blackout 220 GR Full Metal Jacket Subsonic 20 Bx/ 50 Cs The 300 Blackout Subsonic by Sellier and Bellot is a 220 grain full metal jacket subsonic. This round has a muzzle velocity of 1159 feet per second, and 500 foot pounds of energy. Caliber: 300 AAC Blackout/Whisper (7.62X35mm) Bullet Type: Full Metal Jacket Subsonic Bullet Weight: 220 GR Muzzle Energy: 500 ft lbs Muzzle Velocity: 1159 fps Rounds Per Box: 20 Boxes Per Case: 50
