Winchester .223 Remington 55 Grain Full Metal Jacket Brass Rifle Ammo 800 Rounds. Specifications for Winchester .223 Remington 55 Grain Full Metal Jacket Brass Rifle Ammunition: Manufacturer: Winchester Caliber: .223 Remington Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 55 grain Cartridge Case Material: Brass Muzzle Velocity: 3240 ft/s Muzzle Energy: 1282 ft-lbs Application: Recreational Shooting Hunting Target Shooting Competition Primer Style: Centerfire Lead Free: No Package Contents: Winchester .223 Remington 55 Grain Full Metal Jacket Brass Rifle Ammunition What is Winchester .223 Remington 55 Grain Full Metal Jacket Brass Rifle Ammunition good for? The manufacturer thinks that it is suitable for competition target shooting hunting recreational shooting.Winchester W223800: .223 Remington 55 Grain Full Metal Jacket Brass Rifle Ammo 800 Rounds