This Model 12 was a real basket case when I bought it at a house auction about 6 years ago. No finish left except in the nooks and crannys. When I
discovered Oxpho Blue about 5 years ago I used it to refinish the old gal.
My usual method is to get the metal as clean as possible even though the instruction say you don't have to. Then heat the metal up in the oven or for small jobs I use a paint stripper/heat gun. In the oven I set the temp at 200 degrees for 30 minutes. After taking the metal from the oven I apply Oxpho immediately. It's amazing how much better results are when the metal is hot.
The old M12 looked great with a nice black finish. In the 5 years since it's Oxpho finish it's been my main hunting shotgun. The finish is holding up well and you can probably see some wear on the corners. Haven't used it for a year and when I took it out to clean the other day, I noticed it was developing a slight brown tint. Has anyone had an Oxpho job turn color? As you can see from the photos it's not really noticable but under strong light I can see it.
I've done a couple guns as well as touch up and am really pleased with the results of Oxpho in cream and liquid.