With a muzzle velocity of 1050 fps which is 75 fps slower than what it would take to break the sound barrier this round doesn’t issue a cracking report when it is fired. That makes it relatively quieter than most other 300 AAC Blackout cartridges on the market and when utilized in conjunction with a silencer it’s truly stealthy. You would barely need hearing protection while firing this round. This cartridge by Magtech also features a 200 grain full metal jacket projectile. – Caliber: 300 Blackout – Bullet Type: Full Metal Jacket – Bullet Weight: 200 gr – Muzzle Energy: 490 ft / lbs – Muzzle Velocity: 1050 fps – Rounds Per Box: 50