Specifications for Winchester USA WHITE BOX 10mm Auto 180 grain Full Metal Jacket Centerfire Pistol Ammunition: Caliber: 10mm Auto Number of Rounds: 500 Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 180 grain Cartridge Case Material: Brass Muzzle Velocity: 1080 ft/s Package Type: Box Primer Location: Centerfire