Kent Bismuth Waterfowl loads are denser, yet softer, than steel. With a density of 9.6g/cc, bismuth pellets are 24 percent denser than steel and retain more downrange energy. Being softer than steel means bismuth you can safely use it in older shotguns and through tighter chokes that don’t tolerate steel shot. 12-gauge loads include 3 1/2-inch 1 1/2-ounce at 1,450 fps, 3-inch 1 1/2-ounce or 1 3/8-ounce at 1,350 and 1,450 fps respectively, all with 4, 3, 2, or BB sized shot, and 2 3/4-inch with 1 1/4-ounce of number 4 at 1,350 fps. The lone 3-inch 20-gauge offering has a 1-ounce payload of 4, 3, or 2, at 1,400 fps.