I have used field loads, target loads, heavy dove loads, game loads, reloads, and what I have found mostly is it simply doesn't matter, if I put the bird in the pattern in falls out of the sky. I even quit reloading most shotgun shells because the saving just weren't in it anymore, and buy the cheap walmart loads just before dove season, seem to kill doves and break clays just fine. If I was a competitive shooter I might be more concerned but aside from the cost, well I'm just not that good of a shotgun shot.