Well the pictures are coming out kind of out of order, but you still have a good idea of what I did here.
I have to say I am really impressed with how tight this old gun feels.
When I checked it I found one part of the barrel, close to the muzzle, that was only .062" thick. The book says it's OK down to about 0.040" so I guess that's not too thin.
Clearly this gun was sawed off, as there are absolutely no chokes left, and the pattern at 30 yards is huge. Over 12 inches dia.
Also the barrels do not touch at the muzzles. There's nearly a quarter inch between them which is filled up with solder or epoxy and painted. I can't tell which and I haven't dug into it yet.
Probably no need. I shot a dozen rounds through it and I don't see any evidence of cracking or other problems.
The rear bead is broken off and I don't know if the stub was threaded or pressed in. I was going to try and drill it tonight & stick in a tiny easy out.