The Hornady Superformance SST .308 Win 150-Grain Rifle Ammunition is a high-performance centerfire ammo for hunting and shooting. It delivers a fast muzzle velocity of 3,000 fps and a powerful muzzle energy of 2,997 ft.-lb. The SST bullet features a polymer tip and a boattail design. The ammunition comes in a 20-round box and is suitable for rifles chambered in .308 Win caliber. Hornady Superformance SST .308 Win 150-Grain Rifle Ammunition - 20 Rounds