|Bullet Weight||55 Grain|
|Bullet Type||Full Metal Jacket Boat Tail (FMJ-BT)|
|Ammo Caliber||.223 Remington|
|Muzzle Velocity (fps)||3240|
|Muzzle Energy (ft lbs)||1282|
|Cost Per Round||71.0¢ per round|
This military-grade cartridge has a 55 grain bullet, the most common weight for 223 Rem and the standard for the Army’s own M193 spec ammo. At that weight the bullet issues from the muzzle at nearly three times the speed of sound. The bullet’s boat tail base is tapered to make it more aerodynamic, enabling it to fly faster than 1,900 fps at 400 yards. The boat tail helps flatten the bullet’s trajectory and protects it against wind drift as well.
Federal’s FMJ lacks any steel and will not attract a magnet. It will help a semi-auto feed without jamming and prevent its barrel from quickly streaking with lead residue, but it will not expand inside soft tissue. Ammo like this can hold its own in a fight, but it’s not ideal for hunting anything larger than varmints.
This ammo has new production brass cases, with 100 percent non-corrosive Boxer primers that make it great for reloading. Many people are wary of these military-grade rounds’ cases, which are gray around their necks. This discoloration is not the result of these cases having already been fired – it merely shows the brass has been correctly heat-treated so they can seal the chamber more effectively during ignition.