The Nosler Custom Trophy Grade .338 Lapua Magnum 300-Grain Centerfire Rifle Ammunition features an AccuBond bullet type and offers a muzzle velocity of 2,650 fps with a muzzle energy of 4,677 ft.-lb. Nosler Custom Trophy Grade .338 Lapua Magnum 300-Grain Centerfire Rifle Ammunition - Rifle Shells at Academy Sports