Guns, Dogs and Blades QnA

I have done that before as well, not sure where I found out about that test. That one and along with the tall target test. Get a 3-4' tall piece of paper, draw a vertical line on it and hang it perfectly vertical. Put your zero and first shot at the bottom of the paper, then dial in a bunch of come up, shoot again, dial in more and shoot again, keep repeating till you hit the top of your target. Compare your impacts to the vertical line to see how level your scope really is.