Leupold MOA scopes are NOT 1/4" clicks at 100 yards. They are true MOA, which is 1.047" at 100 yards, or .26" per click at 100. This of course compounds as you move to distance.
Second, I didn't see anywhere where anyone suggested looking at atmospherics. They play a drastic role in your dope, especially when you get past 700-800 yards. If you're doping for one density altitude, but shooting in another you can easily miss targets at 800-1000 yards. It's important to make sure you have barometric STATION pressure, along with actual altitude and temperature. Set humidity to 50% and forget about it. If these settings aren't taken in account for those distances you can easily miss your target.
