....I've often wondered if you couldn't do the exact opposite to get a finish to penetrate much deeper into the wood, much like pressure treated lumber. But pressure treated lumber is much heavier, so the added weight of a gun stock so treated might outweigh the benefits of being better sealed against moisture.
Wood stabilizing is done by a bunch of firms and individuals, and has been done on gun stocks. A simple brake bleeder can draw vacuum, but it might be hard work. Capped pipe and a small ball valve can hold vacuum.
If you try it, you might consider using something that cures, and you can still use your favorite finish on the out side.
