Man, your fast, Mustard!
Glad the refinish is going well. So long as the stock looks better than it did, you've "done no harm" in my book. My two are actually in pretty good shape; shallow (numerous) dents, and no discernable water damage/darkening. But some stocks I've seen are downright gnarly toward the butt, stained black and streaky
. Duracoat would be a better look for those dogs.
Even on my rifle, a modern, more transparent finish would probably look better, since my walnut stock has literally nothing going on grain-wise (looks like dark pine) and is a bit plain with the satin brown lacquer. I intend to replace the stock with something that fits me better eventually, so I have no need to mess with the original, though.
TCB