I sight long range rifles (.270, 30-06, 300 WM, etc) in 1" high at 200 yards. That puts me at 3" high at 100, and only 4-6" low (depending on caliber, bullet weight, BC,) at 300 yards. At 400 yards, I could hold just above the back and drop it in the lower part of the kill zone. If the wind cooperates!