Sorry I'm not on point here. Let me ask a question this way. It may help me get the answers I'm looking for. Do you think I should have more than 30 moa up elevation after sight in at 100 yds, using a 65 moa total elevation scope sitting on a 20 moa rail. Anyone I know can reach 1000 yds using a comparable setup , some using 20 moa rail with a less total elevation scope. Is this common needing a 30 or 40 moa rail to reach 1000yds. If not, then what are some reasons for this other than mounting corrections.