The reticule moves a great deal. Setting this up looks to be a somewhat complex process. You have to get both the reticule and the scope lined up properly by loosening and tightening the mount which has set screws for up and down. It may require shims for side to side. The idea is to have the reticule centered near the top for 100 meters and when cranked down to 800 meters it will be near the bottom. Could be the other way around, I'm not looking at the set up sheet right now. Once you have that completed, you loosen the screws on top, move the knobs without moving the reticule and then tighten everything up again. Bore sighting it, I believe I have it shimmed properly for left and right but I need to shoot it to see how close I am.