Hornady HP XTP® 9mm 124-Grain Bullets

Caliber 308 Brass Case, Bullet FMJ, Muzzle Velocity 2751 FPS, Bullet Energy 2428 ft lbs

Caliber: 5.56 Bullet Type: Green Tip Bullet Weight: 62 GR Muzzle Energy 1282 ft lbs Muzzle Velocity 3240 fps Casing Material: Brass 6000 rounds left in stock

Winchester Super Short Magnum, or WSSM is a line of rebated rim bottlenecked centerfire short magnum cartridges introduced by the US Repeating Arms Company (Winchester Inc). It is a further development of the Winchester Short Magnum concept utilizing smaller bullets, but of a still higher velocity.