Winchester Super-X Low Rcoil Rifled Slug is idea for close range hunting situations and competitive shooting events where recoil and sight acquisition is paramount. – Features – Low recoil – Reliable functioning in semi-auto – Heavyweigth knockdown – Cartridge 12 Gauge – Best Use Big Game – Grain Weight 1 oz – Quantity 150 Round – Configuration (10 boxes of 15) – NonToxic No – Shell Length 2-3/4 – Muzzle Velocity 1300 Feet Per Second – Muzzle Energy 1738 Foot Pounds – Bullet Style Slug