This is excellent ammo for practice recreational shooters serious competitive handgun shooting sports Bullseye competitors shooting action pistol shooting matches and silhouette shooters. Also a excellent home defense round. – Caliber: 25 Automatic Colt Pistol – Bullet Weight: 50 gr – Bullet Style: Full Metal Jacket – Muzzle Velocity: 760 fps – Muzzle Energy: 65 ft / lbs – Rounds Per Box: 50