Recommended for use with large and heavy game, Power-Shok slugs provide better shot alignment and harder-hitting performance in the field. Loaded with Federal's uniquely shaped tapered sabot slug, this ammunition offers maximum penetration and excellent accuracy. Combined with Federal's reputation for quality and awesome stopping power, this round will give you the results you've been looking for. Technical InformationGauge/Bore: 20Shell Length: 2-3/4"Slug Type: SabotSlug Weight: 7/8 ozBallistics Information:Muzzle Velocity: 1450 fpsMuzzle Energy: 1787 ft lbsCan also be used in rifled choke tube barrels or fully rifled barrels. An excellent choice on medium game like white tail or mule deer.