I have a big bullseye match coming up in Harrisburg. I was function testing the magazines for my High Standard Supermatic with different brands of ammunition because with some brands of ammunition the slide doesn't go fully into battery. So I put 5 rounds each of .22 shells (Federal, Remington and CCI) into separate magazines and test fired them. I wanted to see if any sight changes would have to be made prior to the match. So at 15 yards with 2 hands and a green dot sight this is what I got. It doesn't look like I will have to move the sights.