When Is Your Shot Patterning Correct?
The pattern of pellets within a 30-inch circle should be of a proper, even density to ensure a clean kill. The pattern should contain a sufficient percentage of the load, which should be at least 55% to 60%.
Continue this process, trying different choke and load combinations, until you get an even pattern density with a sufficient percentage of the load within a 30-inch circle while shooting from the distance that you expect to be from the game you are hunting.
Shooting at a target with a drawn bull’s-eye or at a bird or clay target is only useful when patterning for turkeys or determining your gun’s point of aim and fit. It is not useful in determining pattern density for flying or running targets.