My gun is a walnut stock, and I find that after 3-5 outings, I need to wipe it down again with BLO mixed with mineral spirits. Then it looks great again. Same with after cleaning, if I get dribbles of water on it. I just wipe it with the thinned BLO.
My goal is to not use anything "plastic". No Polyurethane. It was done 200 years ago, it can be done today. I have 4-5 Appalachian originals then their stocks look great, very smooth and glossy. They didn't use Poly. Also, the military used BLO, exclusively, for the guns our soldiers carried in rain and jungles in PI and Cuba....worked for them. I'm in the southwest, it never rains when I'm out. So I'm doing an experiment with my rifle. I was reading about long rifle finishes in a 1922 guide the other day, that being 100 years after the fact, and 100 years ago now. They postulated a lot of things were used. But Polyurethane wasn't one of them, or even invented. I've made a lot of my own chemistry for antique processes, I'm thinking one of the varnishes from the 1700s-1800s might be the next step to add some gloss and hardness to a BLO.
Yes, my BLO probably needs a little lacquer, shellac, or varnish added. That will be the next step, figuring out which one. But I'm not to use anything with plastic in it.