Hevi-Shot Hammer Upland 20 Gauge 3in #3 1oz Upland Shotshells - At HEVI-Shot, we've always been about density. Density is the secret sauce. It leads to tighter patterns, higher speeds and more knockdown power. In short, it increases their chance of success in the field. HEVI-Hammer has a 15% higher density bismuth (9.64g/cc) layered over 85% precision steel pellets. That small but mighty leading edge of bismuth packs nearly 50% more knockdown power than the steel layer at 40 yards. With their 9.64 g/cc Bismuth, you can generally shoot one shot size smaller than steel for the same lethality. In their HEVI-Hammer, both the bismuth and steel are the same size! HEVI-Hammer Upland is a superior non-toxic shotshell for areas where lead is prohibited or for environmental conscious hunters. We are offering loads for large, medium, and smaller upland game birds.