I've never used true tung oil, only the finishes mixed with varnish. I use that stuff on mil surp rifles that originally had a rather glossy shellac finish (M91/30, M38-44, T99 Arisaka) and on other rifles that I thought would be heavily exposed to the elements. I've gotten good results with BLO too. Just remember that you have to rub in your finish coats (after sealing and sanding in stain/BLO/thinner) several times and make your hand get hot doing it. It never really dries, so after you are done putting finish coats on let it set a week or 2 and then give the stock a really hard rubbing to get rid of the tackiness. This is not a bad task as you can do it watching TV with a beer handy. It takes a wax finish well, either Butcher's wax or Howard's feed & wax. I would say my BLO finished stocks are more attractive than the tung-oil varnish, and they smell nice too.
One warning though, if you use rags or shop towels for your finishing and get BLO on them, do NOT throw them in the trash, as BLO-soaked rags have a tendency to spontaneously combust. Take them outside and throw them in your fire pit. If you don't have a fire pit, you can put them in a metal can away from combustibles. I use cut-up blue shop towels when sanding in BLO. Afterward, I take them outside, light them w/ my Zippo, and toss them in the firepit.
DJL