I was looking at some information about painting boats and cars with polyurethane coatings. In the Q&A about prepping, it was mentioned that Easy Off oven cleaner can be used to remove paint from wood. I don't know if the paint it works on is poly, it just said "remove paint from wood." I wonder if this would be a useful technique for stripping the poly from gunstocks. Worth a try for those refinishing Browning (and probably other makes). Nothing to lose by trying.