Really, mines with three different barrels returns to zero every time. Along with many owners, perhaps an issue with yours in particular. I have taken it apart put it in its ravel case driven a coupleThis is simply not true.
I had a Sauer 404 and it was 4 inch off every time i even took it apart.
My R8 is returning to zero 100% all the time.
Of hours reassembled it and shot deer with absolutely no issues.

