My new Ross Rifle Mk.III

[glycerin]

Oatmealn metal, I used hardware store paint stripper, requires several coats, a stiff plastic windshield scrapper, steel wool, q-tips and tooth picks. If you had time and a pipe to submerge in, even kerosene or paint thinner might work. That's an ugly buttstock repair, if it isn't solid, consider using CTC marine epoxy(or brownell's epoxy), but only if wood isn't oil soaked. Screws can be replaced with wood dowels.