It depends on the LEVEL of cleaning you want. People are talking here about everything from light cleaning, oiling dry wood, to
stripping off any remaining finish. Big difference. Most of these old guns have their original finish so dirty that nothing remains of it underneith. Just more dirt, then bare wood. Still, I try to NOT take off that finish...keep the gun looking old, get rid of the black dirt only.
What I do for a gun that is very dirty but I want to PRESERVE the originality as much as possible is:
1. First use some tap water with Dawn dish detergent in it. Wet a terrycloth rag wipe the gun with it to remove any dirt. That removes most organic dirt (handling prints, regular dirt).
2. If that didn't brighten it up enough, I try Mineral Spirits on a rag. This is a mild solvent that will not immediately start stripping the old varnish finish. Just wipe it quickly, it evaporates in seconds.
3. Follow up by an overcoat of diluted True Oil (in Mineral spirits) if the finish is an oil type. If varnish, just wax it with Johnsons Wax or similar (it's not made anymore)
If the stock is OIL-SOAKED you have to remove that by soaking the stock in Acetone. THAT will remove any and all original finish. You can soak, wipe, repeat many times for a few hours or days, eventually the oil will be gone. Then refinish. I like the natural type oil finishes. Nothing modern or "plastic" with poly in it.
Here is an uncommon Stevens 525 Trap gun I cleaned. The wood is always nice on this model, they were special order only. But it was black and you could not see any figure. Some oil soaking at the wrist and forend. I decided I had to strip it, but did NOT SAND IT. I don't like the "fresh as a modern Ruger" look on 120 year old guns. I try to take one from a poorly kept look, to a nice survivor look. Not a refinished by bubba look.
The stock indeed has beautiful figure, which you can now see. I did not sand it, or try to recut the checkering. I did not try to remove or fill the deer head and initials some owner had proudly pinpoint engraved in the butt, or the notches for the 13 deer he obviously shot with the gun.
![[Linked Image from live.staticflickr.com]](https://live.staticflickr.com/65535/53539131157_8eb058a9d2_o.jpg)
The right side was worse, lots of oil.
![[Linked Image from live.staticflickr.com]](https://live.staticflickr.com/65535/53531841541_4d13bc5e8d_o.jpg)
I got most out except the top of the comb. Recoated when done with about 5 coats of traditional oil finish (Chambers):
![[Linked Image from live.staticflickr.com]](https://live.staticflickr.com/65535/53531871728_8550cbc0ef_b.jpg)