This is high-quality Wolf Performance .223-caliber 55-grain ammunition from the Tula Cartridge works in Russia. This is steel cased, Boxer-primed, copper full metal jacket, non-corrosive and non-reloadable. Muzzle velocity is 3,149 fps. 20 rounds per box, 25 boxes packed in a box. This ammo has polymer coated steel cases. Simply put, this is some of the best ammo on the market today at a great price. Ammo restrictions: We do not sell ammunition to Hawaii, Alaska, Massachusetts; New York City; Washington, DC; or Cook County, Illinois. Please check your state and local laws before ordering ammunition. Ammo Cannot Ship by Air! Imported by SSI; please direct specific questions to them at 714-635-4246. We have other .223 ammo available: AMM-229 and AMM-227.