Re: Timber stocks?
As with anything made of wood intended to see time outside. The finish means everything, as well as how the finish is maintained. I make a lot of out door furniture, and refinish wood stocks. The most important thing is to make double damn sure it's sealed, and every so often touch it up. in the last 5 years or so I've developed a serious liking for teak oil, it's still linseed oil but with a polyurethane added. On a rifle stock all it takes for touch up is some light buffing with fine steel wool (inspect for and remove slivers from the steel wool) apply the teak oil rubb in by hand (make sure you wear nitrile gloves) wipe off the excess, repeat how ever many times you feel necessary the more the better, after it dries you can then buff with a piece of burlap for a deep finish, and luster.
Keep in mind the animals we shoot for food and display are not bullet proof. Contrary to popular belief, they bleed and die just like they did a hundred years ago. Being competent with a given rifle is far more important than impressive ballistics and poor shootability. High velocity misses never put a steak in the freezer.