The trick with most of these finishes is to put only a few drops on and rub it in.
Another good way to stop the finish was drying out at the top of the bottle is to store it cap down.
Most store bought Tung oils are a wiping varnish with no Tung oil in them. True Tung oil dries clear.
Also do not be mislead by finishes called Sanding Sealers, they are just thinned down finishes. Any finish is a sanding sealer and work better at full strength not thinned.
A gun stock is no different than a piece of quality furniture in giving it a finish. Just depends on how many coats you want to do.
