PPU's Handgun ammunition is brass-cased, non-corrosive boxer primed and features improved bullet designs which result in greater energy performance, bullet expansion, and reliability. Series Defense Caliber 357 Sig Application Home Defense Bullet Type Flat Point Jacketed Bullet Weight 125 gr Muzzle Energy 660 ft lbs Boxes Per Case 20 Rounds Per Box 50 Casing Material Brass Muzzle Velocity 1542 fps Unit Of Measure box