Craigd, I don't have that gun any longer BUT It it wasn't observable until I got it under the lights. I could not get that 'shadow' out of the scene. There must be a slight change in the surface for that to occur. Number 2 has a very large stock, about like a Magnum 10 gauge. So--my guess, like yours, the stocker had to taper it a slightly to fit. The strange thing is it was not noticeable in regular room light?? Anyway, that's the story. I do not restore guns as a rule and was interested in folks thoughts on the case coloring match.