20 MOA Base Calculation

DoubleAught

Beginner
Nov 7, 2005
3
0
Is anyone aware of a ballistics program that can factor in a 20 MOA base.
I have one on a Rem 700 .300 Winmag. The scope is a Zeiss Conquest 6.5x20x50. What I find peculiar is that when the scope is mechanically centered, my bullet strike is only 5" high at 100 yds when aiming at the bullseye. I'm firing a 180 gr AccuBond with a 524 BC, and I fully expected the bullet strike to be around 18"-20" high at 100 yds. I haven't determined how much optical center deviates from mechanical center with this scope, but assuming it's close, where am I going wrong in my math ???
Thank you.
 
Thats probably a flaw in the reciever, at least thats what I took it to be on mine. I ran out of adjustment tring to make a 100 yd zero, with a scope that had 105 MOA of elevation. changed to a 0 MOA base and I'm 87 MOA from the top end.
RR
 
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