Freedom Munitions .300 Blackout 150 Grain Full Metal Jacket Brass Rifle Ammo 250 Rounds. This ammunition shoots at 1800 fps and is ideal for the shooter that hits the range. The FMJ bullet is a projectile consisting of a soft lead core encased in a copper shell. This allows for higher velocities and improved feeding characteristics. Specifications for Freedom Munitions .300 Blackout 150 Grain Full Metal Jacket Brass Rifle Ammunition: Manufacturer: Freedom Munitions Caliber: .300 AAC Blackout Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 150 grain Cartridge Case Material: Brass Application: General Package Contents: Freedom Munitions .300 Blackout 150 Grain Full Metal Jacket Brass Rifle Ammunition What is Freedom Munitions .300 Blackout 150 Grain Full Metal Jacket Brass Rifle Ammunition good for? The manufacturer says that it is suitable for general.Freedom Munitions FM300F150N250: .300 Blackout 150 Grain Full Metal Jacket Brass Rifle Ammo 250 Rounds