Really, that sounds like a shooter issue not loading his shotgun properly. When I shot my dad's old Navy Arms 12 ga with 100 grs 2Fg, leather OP wads, Felt Wads and 1 3/8 oz of bismuth 4's I turned ducks inside out at 25 yards. I went down to 1 1/8 of 4's to keep from tearing them up. I shoot a 1 1/16 oz load in my 20's and have no problem. I guess I must be specialMy 12 gauge is a killing machine with lead shot. I’m using bismuth for waterfowl just to be legal. I hate it - I get too many wounded birds. I had one flare over decoys at about 25 yards - my son said that the pattern just covered the bird. Son of a gun had to be shot twice…