The Winchester USA M855 Rifle Ammo brings the well-known M855 series and Lake City Manufactured Ammunition lineage to shooters who demand consistency for range training, marksmanship drills, and duty applications, offering 5.56x45mm NATO performance with a 62 gr full metal jacket lead core bullet and brass casing that feeds reliably in AR-style platforms and bolt guns; with a listed muzzle velocity of 3060 fps and muzzle energy around 1289 ft-lbs, this load provides predictable ballistics for zeroing, trajectory work, and ballistic training while the FMJ profile supports economical target shooting and high-round-count practice, and the brass casings aid extraction and reloading convenience for handloaders; rated ORM-D for transport and produced in the United States, Winchesters M855 line is favored by range officers, trainers, and competition shooters who value uniform velocity, consistent point of impact, and the trusted performance associated with Winchester USA ammunition.