Just picked up a couple boxes of the heavy steel. It claims to be 20 percent more dense than normal steel loads. It also travels at 1550 as advertised on the box. I took some out today and shot at clays. I had to lead a little less up close but out past 30 I aimed normal. I also patterned the stuff in my .870 Express and it patterned great!! I shoot a modified choke, at 20, I'll be destroying them, at 30 the pattern is great. Compared to the "out of this world over priced" other non toxic stuff I think this is a good compromise on ammo for ducks. At 30 bucks for a box of 25 I'll be shooting it this year. Has anyone else used the stuff in the past?? Likes or dislikes??