I recently bought an Eotech 512 for my Bushmaster AR-15. I've read that it's recommended that it be zeroed at 50, or even 100 yards. My problem is that it's still below freezing where I live and all the outdoor ranges are closed and the indoor range I go to only goes out to 25 yards. I was hoping someone could help me figure out just where I'd want my shots to land on a target at 25 yards so that it would be zeroed at 50 or 100 yards. Thanks in advance.