What is an acceptable difference in windage offset? I got 2 model 10's with after market bases installed, Seekins and Badger, where there is a considerable difference in offset to one side or the other. I've switched scopes, rings, turned the rings around, swapped bases back and forth between guns. And both guns still need to be cranked over considerably more to one side than the other. In opposite directions between guns though. Leaving me slightly less than 3 mils correction in one direction and 9+ mils in the other.

Don't expect it to be equal, but, 3 times as much difference to one side seems excessive. Especially when only being left with less than 3 mils correction.

After all the swapping, it would seem to me the screw holes for the bases are out of alignment. Or am I missing something?