I cannot speak for all the laws of physics and I will tell you, as a child, we loathed Remington shotgun shells in the duck woods. That having been said, Hevi Shot is well to use a worn out term: awesome.
I am of the mind steel is just a terrible option for duck hunting period. You can dress it up however you want but it does not compare to Hevi Shot or Bismuth.
When you shoot Hevi Shot and see ducks fall with one round then you understand why it is actually not as expensive to shoot as is three steel shotgun shells per duck.
3.5 Hevi Shot? In a word: devastating.
