Winchester Power Max Bonded ammunition was developed for the whitetail deer hunter seeking superior performance. Featuring a Protected Hollow Point design, this bonded bullet penetrates deep and boasts excellent weight retention. Upon impact, the bullet mushrooms to twice its original diameter delivering devastating knockdown power. Because of the remarkable qualities of the round, Winchester has stamped this ammunition as the official ammunition for whitetail hunting. This ammunition is new production, non-corrosive, in reloadable brass cases.