I saw a commercial for these shells and had to try them. They are steel loads that have a mix of regular steel shot and a mix of special steel shot that have a razor rib around the pellet. These pellets are supposed to have superior penetration. I bought a box of 3" 2's for westside pheasant and ducks. Today I shot a rooster at about 40 yards with one and it folded nicely. When I cleaned it there were five pellets that had completely went trhough the bird. They seem to be a very potent load and I am going to shoot them again tomorrow.