Welcome to Milsurps being a Taswegian is ok I guess from a Sandgropers point of view!
With the rifle completely stripped (Threads of information on it) use a natural based stripper that is water soluble to remove all the shelac then give the stock a good drink of 50/50 RLO/Mineral Turps till it wont take anymore air drying between drinkls wipe off excess when it wont take anymore (wont soak in over night)
Then give it a light rubbing (circling) of bees wax wipe off with a clean soft cloth when dry that's what I do to my old girls and it has not harmed them.
Pics do help the learned ones here assist you.
If you have never stripped one before read up on it never take the butt off first always take all the top & bottom fore woods off first.