I solved those problems by using Burris Signature rings with the inserts. The new ones come with an extra set of off-set inserts just in case you need them.
You could easily get .010" off-set, or more, with NO CHANCE of binding your scope tube. You never get ring marks on the tube either.
Slowly but surely all my rifles get switched over as I change/upgrade the optics. And yes - I have them on my 209x50 ProHunter with the Omega scope.