Federal Premium Hevi-Bismuth 12 Gauge 2-3/4in #4 1-1/4oz Upland Shotsells - 25 Rounds - If you've never experienced the performance of bismuth pellets, you need to. Federal Premium HEVI-Bismuth hits both upland birds and waterfowl with the power of 9.6 g/cc density pellets. Sourced from Federal's partners at HEVI-Shot, the industry leader in pellet technology, HEVI-Bismuth shot is 22 percent denser than steel, delivering more lethal energy downrange. Launched by the FLITECONTROL FLEX wad, bismuth pellets pattern consistently, and their metallic properties make them safe in both modern and classic shotguns. Bismuth shot denser than steel Better leathality down range Safe and effective for modern shotguns