Use the Norma USA American PH Sierra HPBT .338 Norma Mag 300-Grain Centerfire Rifle Ammunition - 20 Rounds to enhance your next hunting trip. Made with brass materials for durability, this ammo comes with a 2,660 FPS muzzle velocity. Norma USA American PH Sierra HPBT .338 Norma Mag 300-Grain Centerfire Rifle Ammunition - 20 Rounds - Rifle Shells at Academy Sports