Caliber: .30-06 - Weight: 150 Grains - Bullet Type: SST - Muzzle Energy: 3159 ft lbs - Muzzle Velocity: 3080 fps - Rounds Per Box: 20 - Superformance ammunition is 100 to 200 fps FASTER than any conventional ammunition on the market today and achieves this performance in EVERY gun WITHOUT increases in felt recoil muzzle blast temperature sensitivity fouling or loss of accuracy. Superformance is a cutting edge technological advancement in ammunition design that transcends convention and achieves the highest performance of any ammunition on the market today.