Alex;

I too, am interested in your setup to silver solder the barrels and the short rib for the rib extension.

I am going to shoelump a set .30-40 barrels and I plan to build a temporary fire-brick muffle with a propane burner, without a forced air assist blower. Seems to me like the blower is too much for such an application and would produce too much heat. However, if you have found another method of heating without the necessity of a temporary brick muffle' I am interesting in learning about it.

I am also interested if you used any of the 'anti-scaleing products to coat the bore of the barrels while you brazed them to the shoe lump. There is such a product here in USA that I have used to coat prior gun lock parts prior to heat treating and quenching, in order to not have surface scale build up. It works well. It is in a powder form and can be mixed with alcohol to form a paste to apply to the metal; and afterward boiling in plain water will remove the hardened paste.

Regards;
Steve