Any thoughts on this new Federal Mag-Shok HEAVYWEIGHT Turkey?

Check out the link:
http://www.federalpremium.com/products/details/shotshell.aspx?id=778

Unlike all the other versions of "hevi" shot, this one is much "hevier".

Winchester's Extended Range loads are advertised as having shot 10% heavier than lead. I think the "Hevi-13" loads are 15% heavier than lead. These new Federal HEAVYWEIGHTS are supposed to be 30% heavier than lead!

Federal states their new #7 size HEAVYWEIGHT shot has the same per pellet energy at 40 yards as a #5 standard lead pellet while offering a much denser pattern.