I have used multiple sets (haven't kept count) of both the matte blue and silver Talley lightweights, and still have them on three of my center-fire rifles. I have not seen any marking or deformation on any of the scopes. In fact, the only rings that I have seen leave marks have been the Ruger factory rings and the occasional set of Leupolds.
I confess that I am pretty much an inveterate scope swapper. If there were commonly problems with Talley lightweights, I should have run into at least one bad set. So far, it hasn't happened.
