With bismuth being denser and softer than steel, it provides excellent penetration and high energy transfer.The double-layer payload, with different shot sizes, delivers homogeneous shot patterns and ensures the shot-killing power even at long distances.Shot Material: BismuthGauge: 12 GaugeLength: 3"Ounces: 1 1/4 ozShot Size: 3/4Muzzle Velocity: 1350 fpsRounds Per Box: 10Boxes Per Case: 10Hazair: YesAmmunition cannot be shipped to a P.O. Box, please use a physical address during checkout. For restricted state buyers (CT, IL, NJ), please email a copy of your state's credentials, and a photo ID along your order number to ffl@firearmsdepot.com within 5 business days to avoid cancellation and refunding your order. For California, Massachusetts and New York buyers, please have your dealer email us a copy of their FFL or Ammo Vendor License along with your order number to ffl@firearmsdepot.com within 5 business days to avoid cancellation and refunding your order. Your order will not ship without us receiving this information. Thank you for your cooperation