No fewer than 30 shots from a rest on a b6 target at 50 yards. To measure how accurate you are, you must first measure how precise your tool is. I recommend 80 shots to see the extreme spread. If you test at 25 yards, I recommend using the B-16 target. A score of 100-8x from a rest is very good. A score of 95 unsupported shows mastery of your pistol shooting skills, that is one handed, of course.