All it really shows is that the plugs were out, unless you can measure jug choking, that would have been done at the same time. Is the keel piece loose (the short rib, bottom rear)?
Strip and relay is not required for plug removal.
I was around a lot of percussion double, but that was nearly two decades ago. I saw more than one set of barrels literally fall apart during a trap match, loops and ribs falling off and brls separating, but never saw a barrel come apart.
Guys have always seem to see guns being safer than I did, always being very cautious. I sure wish I had pics of my 14 ga. or my original English single barreled flintlock 11 gauge... I bet I put 1000 rounds through that gun before retiring it.
American Fowler brochure (scan from the Archives circa 1985) fortunately I still own this gun.
