The Hevi-Shot HEVI-Hammer Upland Shotgun Shells deliver tight patterns, high speeds, and big-time knockdown power, all in a lead-free package. These eco-friendly, non-toxic shotgun shells use 85% steel inside a 15% high-density bismuth layer, providing up to 50% more knockdown power than steel by itself at 40 yards. This means you can shoot 1 size smaller than your normal steel loads and get the same results. Environmentally friendly lead-free loads Uses high-density bismuth over the top of steel Provides up to 50% more knockdown power than pure steel Allows you to shoot 1 size smaller than your normal steel loads