If you tig weld it or silver solder, you will probably warp or change the inner contour of the barrel, not to mention possibly loosening the center rib joint. This is also of concern if soldering. I would, and have used successfully, Brownells Hi-Force 44 solder. It is about 25,000 tensile strength and does not take as much heat as silver solder. The one thing to wantch out for is the flux. It is highly corrosive and will take off all the blueing it touches.

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