I'm jumping in here late, but I have a gun that a really masterful craftsman from NY did the restoration on. He restocked it as well as any wellknown stockmaker's work and the finish is superb. It has a nice sheen that is a bit on the glossy side but 'in-the-wood'.

The process he outlined to me was that he took Pro-Custom Oil in the aerosol can and sprayed it into a cup and thinned 50% with mineral spirits. Then sanded in half a dozen coats and the usual sanding to smooth. Then sprayed a couple coats and sanded/polished to desired sheen. The PCO dries very quickly and is durable and waterproof.

I almost forgot, since PCO is compatible with mineral spirits, one could take the solution of alkenet root/mineral spirits and blend with the PCO.