The centerfire handgun ammunition incorporates a full metal jacket bullet for positive functioning and no expansion. This ammunition offers consistent accuracy for target and range shooting. It also provides reduced barrel fouling, which means fewer cleanings and more time on the range.Winchester 10MM Pistol Ammo 180Gr 50Rds FMJ Specifications: 10MM 180 Grains FMJ 50 rounds per box 10 boxes per case