Super-X ammunition has provided exceptional quality and outstanding performance for all types of hunters and shooters who rely on its time-proven dependability backed by legendary excellence. – Caliber: 357 Magnum – Bullet Type: Winclean Brass Enclosed Base – Bullet Weight: 125 gr – Muzzle Velocity: 1370 fps – Muzzle Energy: 521 ft / lbs – Rounds Per Box: 50 – Rounds Per Case: 500