I acetone the wood with old rags and fine steel wool several times and using a heat lamp or the natural sunlight with the stock wrapped up in newspaper and place in the window sill. I find the heat lamp is better (no need to wrap it in newspaer) because I can control the areas I need to concentrate on like the grip area.
Also have a old flea market Iron and old washcloths or towels( lightly wet the towel apply the iron to the wet area to raise the dent) to raise dents and steam out more oil but don't go crazy
all old military stocks we coated with linseed oil, I used a mixture of original linseed oil and a little bit of beeswax, this duplicates orignal miltary finishes
don't use the diswasher, oven cleaner, bleach, or sand paper