Perhaps if you built a tank from PVC pipe filled it with boiled linseed oil and then put the stock in and put it under vacuum pressure that might help to renew the wood.

Steve

BTW I have had wood temporarily swell when I soak a stock in acetone to remove old finish and oil staining. However, it soon shrinks as the acetone evaporates from the wood. However, it does show that wood will absorb fluids and expand.

Approach life like you do a yellow light - RUN IT! (Gail T.)