Winchester Ammo X300WSMLF Super-X 300 WSM 150gr Power-Core 95/5

Winchester's Power Core 95/5 centerfire rifle cartridges start with a 95/5 copper alloy and integrate a highly-engineered contoured cavity, for a benchmark in lead-free, big game cartridges. They feature a devastatingly effective bullet with massive initial impact shock plus deep penetration and virtually 100 percent retained weight to assure maximum trauma to bone and vitals.