Winchester USA .223 Remington 55 Grain FMJ ammunition is a dependable general-purpose rifle load designed for target shooting, training, recreational shooting, and regular range use. Each cartridge is loaded with a conventional 55 grain Full Metal Jacket (FMJ) projectile and manufactured with a reloadable brass case and non-corrosive Boxer primer.
Winchester lists this load at a muzzle velocity of 3,240 FPS and muzzle energy of 1,282 ft-lbs. Each factory box contains 20 rounds, with 1,000 rounds packaged per case.
55 Grain Full Metal Jacket
The 55 grain Full Metal Jacket projectile gives shooters a straightforward option for routine practice and training. Its FMJ construction makes this load particularly well suited for recreational shooting and extended range sessions where specialized hunting or match ammunition is not required.
3,240 FPS Muzzle Velocity
Published specifications list a 3,240 FPS muzzle velocity and 1,282 ft-lbs of muzzle energy. The 55 grain projectile has a listed G1 ballistic coefficient of .255. Actual velocity can vary depending on firearm, barrel length, atmospheric conditions, and other factors.
Reloadable Brass Cases
Winchester loads this ammunition in brass cartridge cases with non-corrosive Boxer primers. The cases are reloadable, providing additional utility for shooters who save their fired brass for handloading.
Winchester USA Ammunition
The Winchester USA line provides shooters with factory-loaded ammunition focused on practical range and training applications. This .223 Remington load combines a familiar 55 grain FMJ configuration with brass cases and Boxer primers for regular rifle use.












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