Umm yes. Typically after one has shot a while and somewhat developed the muscles to shoot properly many things can cause you to have too much sight movement. Usually it's form or the lack of using your body's bone to support your shot, but it can be a few other things too including draw length (which affects form) and some other stuff too. Once you get to the point that you can't trust your sight picture movement or float, you begin timing the shot and attempting to "drive by" when floating by the X. Anticipation of floating across the X can do horrible things sometimes........[8D]