An appropriate percentage depends on the intended application. For example, for 40-yard shots on game birds (1 ¼ ounces of No. 5 shot) and longer clays shots (1 ¹⁄₈ ounces of No. 7 ½ shot), I want my 12-gauge shotgun patterns in the 60 percent range. Generally this is achievable with a Modified choke, though some loads require additional constriction. If you are unable to achieve these percentages, first try a different type of shotshell, then a new choke tube—with a little experimentation, almost all shotguns will shoot well.