Winchester Ammo Features Offering performance and reliability specifically designed for use in 1911 firearms Win1911 provides a choice of personal defense or training ammunition that has been matched for ballistic performance and engineered for the same feel and function. The high-accuracy ballistically matched full metal jacket and jacketed hollow point offerings make this an ideal ammunition choice. Winchester Ammo Specifications Manufacturer Winchester Mfg. Part Number X45T UPC 020892220218 Caliber/Gauge .45 ACP Number of Rounds 50 Ammo Rounds 1-50 Rounds per Box 50 Boxes per Case 10 Ammo Casing Brass Ammo Application Target Ammo Features Full Metal Jacket Ammo Bullet Coating Nickel-Plated Ammo Shot Type Not Specified Bullet Type Full Metal Jacket Muzzle Energy 396 ft lbs Muzzle Velocity 880 fps