Give the metal work the "Easy Off" treatment and you'll be amazed how it comes up:
http://www.canadiangunnutz.com/foru...17-Ross-rifle-(Sort-of)&p=8578415#post8578415
You have been given good advice on the stock: flying pig did a fine job on his. Myself, I would skip the steel wool and simply wipe down thoroughly and carefully with a damp rag, let dry thoroughly then oil, but it depends on the stock and rifle. When you steel wool a stock, what happens is you remove material from the high points, but not the low points, so dents, checkering etc. all appear darker and more noticeable
The only way to avoid that is to completely strip everything, steam out the dents etc. etc. and
that should never be done on a collectible rifle like this. There is nothing worse than a fine old gun that has been ruined in that way. I have a 1910-R it was done to I could post photos of; it's not a pretty sight and even with all the work in the world, it would always look "new" and completely inappropriate to the age and finish of the gun.
Clean out the inletting with an old toothbrush and compressed air when you have removed the barreled action. You can wipe down with a product called Benefect that will kill the mold as well as bleach, but without any harmful effects on you or the woodwork.
The patina on a rifle stock is like the patina on a piece of antique furniture: you mess it up and you've lost half the value, or more, as mentioned above. IF IN DOUBT, DON"T! You can always come back to that later.