Manufactured to Noslers strict quality standards Trophy Grade ammunition uses Nosler Custom brass and Nosler bullets to attain optimum performance no matter where your hunting trip takes you. Whether you want your ammunition loaded with AccuBond Partition Ballistic Tip or E-Tip Nosler Trophy Grade Ammunition will have the right load for the right game. – Caliber: 257 Weatherby Magnum – Bullet Type: AccuBond – Bullet Weight: 110 gr – Muzzle Energy: 2823 ft / lbs – Muzzle Velocity: 3400 fps – Rounds Per Box: 20