I bought a crossbow with a red dot sight on it. As I shoot it I notice a large amount of vertical stringing. When I lay the bow on a rest and move my head around behind the sight, it appears the dot is moving around on the target.
Is this normal for a red dot? Am I going to have to take care to keep the dot centered in the scope? I always thought the dot was supposed to remain fixed no matter how your eye was positioned behind it.