sorry I meant stock finish
gunmaker

Doooahhh, my bad.

I sand in Tung oil. I use 320 wet paper and sand it into the finish and let it dry for a week. Then 400 and let dry a week. Then 600 and let dry for a week. By then the grain is usually pretty well filled and another couple light coats, dry and then rub out.
I found that if I don't wait the week for it to dry it doesn't work. Takes a month to do it this way but not all that much actual work. Scratches and small dings are pretty easy to wetsand out with 1000-1200..........DJ