Hevi-shot's hevi-steel delivers major kinetic energy.It features an increase in speed that delivers 9% more energy at 30 yards and 8% at 40.In short, you will get more knockdown power and fewer crippled birds.Combining higher velocity, a best-in-class wad, and precision manufacturing techniques deliver the ultimate in performance.Application: HuntingGauge: 12 GaugeType: Hevi-SteelLength: 3.50"Ounces: 1 3/8 ozShot Size: BBMuzzle Velocity: 1550 fpsRounds Per Box: 25Boxes Per Case: 10Shot Type: SteelHazair: Yes