Self Defense Features Magtech s Jacketed Hollow Point loads offer shooters a high-performance controlled expansion option for self-defense or hunting applications. Self Defense Specifications Caliber: 10mm Auto Model: Self Defense Bullet Weight: 180 gr Rounds Per Box: 50 Casing Material: Brass Application: Defense Hunting Bullet Type: Jacketed Hollow Point (JHP) Muzzle Energy: 605 ft lbs Muzzle Velocity: 1230 fps