Hevi-Shot Hevi-Steel 20 Gauge 3in #3 7/8oz Waterfowl Shotshells - 25 Rounds - The HEVI-Steel flies at 1500 fps,compared to competing fast steel loads, which run at 1450 fps. This increase in speed delivers 9% more energy at 30 yards and 8% more energy at 40 yards. In short, you get more knockdown power and fewer crippled birds. Clean burning powder and precision manufactured premium steel shot are loaded to Environ-Metal, Inc's exacting loading standards.