Why do I shoot better at 20 yards than I do at 15? I have been shooting at 15 yards for almost 2 weeks now, and shooting fairly well. I still get an occasional whoops. Today I backed up to 20 yards, and dropped EVERY stinkin' arrow into the bullseye. Am I concentratiing more at the 20 yard mark, or is there something going on that I' m not aware of? One thing I do notice, the arrows that I have in the 55-60 spine range hit waaaaaay high, but the 65-70 spine arrows shoot perfect.