i' m interested in trying a savage pendulum sight, but have some questions...i shoot about 53# draw, if i sight it in at 20 yards like its says will i hit the same spot at 30 yards...and its says to sight in on the ground so will it hit the same from 20 feet up in a tree..also does the sight move alot when you are aiming or will it hold steady when you' ve found your aimpoint...thankyou