
Slight color difference on the bottom of the barrels where the fore-end usually is located.

Slight color difference on the bottom of the barrels where the fore-end usually is located (different angle view).
This morning I took the barrel out of my storage area (where I'm keeping it while I'm working on this gun) and thought I'd take a little more time to work on the finer areas of the barrel where I had found that one of the barrels showed visible rust. While my initial efforts were taken to stop and remove the vast majority of the surface rust, I knew that it would take more time to focus in on those areas where the rusting had been most extensive and had left something other than a smooth surface. I have no illusion about being able to remove and pits in the metal, particularly on the right barrel where the vast majority of the rust had been.. So, when I had last worked on the barrels, I left the barrels coated with a thin layer of Kroil to continue any penetrating action that it could provide.
Today, when I set the barrels out on the counter cover I was going to use while working, I noticed the slight color difference on the bottom of the barrels that still was visible after I wiped any remain Kroil off or after I applied to CLP. It is very subtle and I realized that the "lighter" area is where the fore-end normally is located. I hadn't noticed that before. It is very slight and hard to photograph. I assume it just the difference in the exposed metal versus hidden metal under the fore-end. (Note: the barrels are now very clean when I wipe them down with gun oil and a clean cloth).
I'm not concerned. I just hadn't noticed that when I removed the fore-end.
The second thing I noticed was what looks like a wear area on the left barrel. Since most of my attention had been focused on the right barrel, I noticed this slight difference in the barrel coloration of the outside of the left barrel. Again, it is very subtle and difficult to photograph. My first though was "someone took steel wool to this area" and it's possible that happened in the distant past. But a closer look suggests something else to me that gives me some sense of the use of this shotgun. The "wear" appears only in one area on the left barrel immediately in front of where the shells would have been in their chambers. The closer I looked, the more it looked (to me, at least) like where the barrel might have been "held" against close to the body and the old hunting jackets of the past (brown canvas, relatively stiff). If you look carefully, you can see the three-stripe pattern of the Damascus steel barrel. But it also looks like where "wear" might have occurred looking at the pattern.
Again, I'm not really concerned at this time. For a gun that's seen a lot of use, it would make sense. I'm just curious whether those of you with much more experience with these antique shotguns have seen something similar?

