I use a mixture I make myself of pure tung oil and marine spar varnish. i use it in a 1:1 mixture, diluted with mineral spirits, for sanding in to fill the pores. Then, for final rubbed in finishing I go to a 2:1 mix (2 parts varnish and 1 part tung oil).
I have an unopened can of Pro Custom finish which is a mixture of tung oil and urethane. Never opened it.
I'd like to solicit opinions of people who have used Pro Custom oil as a final finish. Advantages, or disadvantages over my mixture (which is what Phil Pilkington sold under his brand name). Have you noticed the urethane in the Pro Custom finish to "scratch white" when gun is in use? I have been told by a dear friend that urethane has a tendency to do that?
