I have read every post in this thread. And...with respect to all- there is clearly either a mis-understanding of the issues that cause a need for lapping vs those that believe that you should just buy better quality rings.
I am seldom an "absolutist". I find that I learn more with an open mind than I can by being convinced that I know the ONLY way - for anything.
But I would ask you all to consider this analytical process that I personally use when problem solving, as appropriate here:
1. Define the problem: scope not centered with bore of rifle
2. List ALL causes or contributing factors:
A. lack of concentricity of scope rings
B. screw holes on receiver out of square with receiver or barrel
C. receiver face not square to barrel
Now - we must select a course of action to determine WHICH of A,B, or C - or maybe all 3.....are the problem - *IF* you want true alignment of scope to receiver and/or barrel...
A. - you could lap the rings, and call it ..."good" - if you really believe that to be the
ONLY problem.
B. and....bed the ring base for cant ...maybe a little in longitudinal correction.
C. square the face of the receiver to the barrel.
So - it is NOT as simple as ..."buy better rings". The rings may or may not be the problem - there are other variables that no matter whether you lap or do not lap - will not be addressed.
If you have a true intent for accuracy - now you need to consider some real gunsmithing.
OR.....you can use rings that allow you to accommodate ALL 3 contributors to what we used to only blame the rings for: Burris Signature Zee. They take a little reading and experimenting for some to get comfortable with, because it IS hard to believe that it took some one so long to come up with a simple, elegant solution
....
I have mounted scopes on dozens of rifles using these including the magnums. I currently have 3 - .300 WM of my own wearing them with hundreds of rounds thru each barrel...NO slippages....NO marring the finish on the scopes. And completely "orbital" adjustment - not just -40 MOA to +40 MOA in the vertical plane....but lateral and diagonal adjustment too. As well - they are much lighter than some of the current "tactica-cool" rings that can add some real weight to your rig.
The bull's eye is in the middle! Shoot straight!
T