300 WSM Winchester Power Point 180grWinchester Super X Power Point . 300 WSM Win Short Mag 180 Grain Centerfire Rifle Ammo has proven itself for over 60 years to function reliably in all types of environmental conditions, as well as deliver lethal terminal performance on big game. The exposed lead tip, Power Point bullet is constructed with a copper jacket, featuring strategically placed notches around the jacket mouth, which initiate quick and uniform expansion for massive energy