The cutoff that has the lumps on it is welded to the replacement tubes, and struck down. When you are not talking Damascus, in an old gun like the Fox quoted above, you are talking low carbon steel, which, welds beautifully. I’m not a Damascus guy, and don’t know what is done in that case.
Other repair options include silver soldering the tubes, or brazing, but, I’ve never seen brazing perpetrated at this point.
Unless you are talking about a monobloc gun, where the lump is a single piece of steel, I’m not terribly interested in the concept of sleeving. If you are, well, good. I’ve heard all the arguments, I’ll use an actual monobloc gun, but, that is where it ends for me.
Best,
Ted
