I have used Pro Custom Oil which is available through Brownells. It is labeled as a mix of tung oil and urethane.
http://www.brownells.com/gunsmith-t...custom-oil-gunstock-finish-prod5531.aspxNot so much rain and moisture here in Arizona. Should one hunt in the PNW or AK, I suppose using the epoxy finish Art has suggested in the past, or switching to Alaskan walnut would be a better option
Doug, ProCustom Oil is far from the worst stuff out there, but like all tung finish claims it is as likely to have no tung and all linseed oil as it is to be all tung. What it really means in the industry is it is applied like tung. It essentially comes out like mixing urethane finish with good oil.