HEVI-Shot HEVI-Shot, HEVI-Hammer, 20 Gauge 3, Max Dram, 1oz, #2 Shot Size, 25Rd Box HS29002 Combine the power of bismuth with the economy of steel to take home more ducks and geese. We devote 15 percent of the HEVI-Hammer Waterfowl payload to 9.6 g/cc HEVI-Bismuth pellets, which we layer over the remaining steel shot to extend effective range and tighten patterns.