okay, im still trying to figure this whole thing out. If I sight my gun in at 100 yds, and im shooting,say, 21 inches low at 400 yds, i would turn my scope up 2.1 MOA. That would be 8 or 9 clicks with a scope with a 1/4 moa right?
To get a more accurate way of knowing what your drop is, shoot your rifle through a chronograph and take your average velocity, and plug it into the formula in a bullet path chart like sierras infinity program. This will tell you everything you want to know and how many moa to put on that deer at 750. It also saves alot of wear on your barrel instead of testing every yardage to find out what your drop is.