I think that if you had the locking bolt teflon coated and then removed the teflon from the sides, so that it would still go into the notches on the cylinder OK, that would leave teflon on the end that rubs on the cylinder and would help a lot.
However, I never considered that little line on the cylinder to be any more important than the little lines that have developed, over the years, on my wife's face. :lol:
She has them, I have them, why would I worry about my revolver?