Not necessarily.
While I could Zero at 100m with my previous 2 6BR's built on XR-100 actions, another shooter could not with his....he actually could not Zero at 300yds properly and 300m was 1 or 2 clicks of the bottom of his scope. We both used the same actions (his was within 25 of one of mine according to the serial #) and the same 20MOA rails (Farrell).