no idea on wood type. oil, like gun oil?
Use Boiled Linseed Oil (BLO) and some Tung oil. Mix a solution up of 50/50 and store it in a marked sealed container. It will dry out if not. Some people will add a small amt of solvent (varsol) to the mix to allow for a faster penetration, some don’t. I have done both methods and they have worked out fine.
Remove the action / barrel from the stock. Rub on generously, let soak for a few hours, and then rub in the excess. Make sure there are not drips of gob on the stock. Let dry over light. Repeat process 4X or until you are happy and put the stock and barreled action back together.
Beeswax, now a few folks have added this too the mix, but it will slow the drying time and leave the stock gummy for a few weeks, Still nice results, but very slow.
A few FYI’s…
1) Linseed oil is good but by it’s self takes a while to dry. Try to use double boiled linseed oil; most varieties have dryers in it to speed the process. If you are looking for pur linseed, go to an art store.
2) Tung Oil will dry over night or faster depending on the moisture in the air, how dry the stock is etc… Leaves a nice finish but it only is on the surface.
3) Truoil, my least favorite…. It’s basically Tung oil, goes on fast and easy as the others but it leaves a glossy shine.
Use the 50/50 mix, might take a bit longer to dry.
Pete