Winchester USA White Box stands for consistent performance and outstanding value offering high-quality ammunition to suit a wide range of hunter’s and shooter’s needs. – Caliber: 45 Automatic Colt Pistol – Bullet Weight: 185 gr – Bullet Type: Full Metal Jacket Flat Nose – Muzzle Energy: 340 ft / lbs – Muzzle Velocity: 910 fps – Rounds Per Box: 50