[StoneChimney]

Yyyyeeahhhh..... if we were to take on that project, here would be my suggestion. Make up a jig to hold the barrels in position. Fashion three pair (top and bottom) of brackets that will fit between the barrels and low enough for the top rib and bottom rib to ride on top of the brackets. Soft-solder the brackets into place to hold the barrels into place. Use black-colored Acraglas full length to adhere the top and bottom ribs into place and help hold the barrels together.

This will NOT make the gun a shooter, but will make it a representable wall-hanger. In fact, we would only do this project on the condition we would permanently render the gun non-shootable.

Of course, I am assuming this is not an other high-value shotgun but a typical percussion side-by-side that you would find with the barrels separated.