This is 300 WSM (Win. Short Mag) Federal Fusion 165gr. SP Ammo. Fusion centerfire rifle ammunition gives hunters a deer bullet of unimaginable kinetic force. These were the original offerings that paved the way to the electrochemical bonding process. They electrochemically joined pure copper to an extreme pressure-formed core to ensure optimal performance. The resulting integrated projectile releases radically high terminal energy on impact and radiating lethal shock throughout the target. This energy is optimized through mass weight retention, a top-secret tip-skiving process and bullet integrity. Muzzle Velocity: 3200 fps. Muzzle Energy: 3410 ft. lbs. This ammo is packed in 20rd. boxes.