I am getting a new bow in two weeks and was thinking of installing a moveable pin sight on it. Are there any manufacturers that make a quality fiber optic sight with a low power magnification and an incremental adjustment that can be made fairly quickly in a hunting situation. I would like to know what yardage I should sight it in at to be in the kill zone on a whitetail out to 25 yards if its possible, I shoot a 450 grain arrow at 260 FPS. Any information or experiences with moveable pin sights would be greatly appreciated!

thanks in advance!
MNMACHINIST