45acp +p ammo is externally/dimensionally identical to 45 acp ammo and can be fired in any 45 acp firearm in normal operating condition.However, the greater pressures and power of the +p ammo will give greater slide velocity.Rating: +PCaliber: 45 ACPBullet Type: Hard Cast Flat Nose (HCFN)Bullet Weight: 255 grMuzzle Energy: 484 ft lbsMuzzle Velocity: 925 fpsRounds Per Box: 20Boxes Per Case: 12Application: Performance,ProtectionCasing Material: BrassHazair: Yes