Not as bad as yours. I had already done the acetone soak for three days and had about a quarter of that. It is cheap. If I recall I paid around $8 for a pound of crystals. It is used to clean up old oak hardwood floors. I never used it for that but was aware of it. It was suggested by a board member and suddenly I remembered it also. I gave it a try and almost gave up since I am a bit impatient. While I was sitting there thinking the spots disappeared. I don't think it can hurt anything so it is worth a try. Try a couple of small areas first. Is the finish removed so it can get to the wood?
The assumption here is that the stains are caused by the oil. I don't think it is based on the pictures. For example, the area behind the lock might be a reaction to the metal and something on the hands of the earlier shooter.
Please let us know how it works out. I am very interested.
