This is more of an FYI thread, since i have already fiqured out the problem. I tried mounting a scope on my newly aquired Winchester .375 H&H. It came with Lepould dual dovetails already on it. When mounted the scope looked visably of center. I tried to boresight it and couldnt get it to boresight. (ran out of windage adjustment) I did several things to eliminate the scope, including brakeing down another guns setup. I then tried to see if it was the weapon itself. Lastly i started measuring on the bases. Though i found a .009" side to side error on the front bases i dint think this was enough to cause what i was seeing. I was sitting there remeasuring the front base when something caught my eye. The radius on the bottom of the bases is machined off center. It is even cocked from front to back. I noticed when i aligned the base by eye and tightend it down i could feel it cock sidways at the last turn of the screws. I wasnt crazy about the dovetails anyway so theres a pair of QRWs on the way.