Dogon;

Thank you for explaining the screw/pin feature developed by Parker Bros. of holding the lump in place for brazing. I suspect the fitting of the screw/pin to the lump was faulty, not drawing the lump and barrel close together and thus the braze joint did not have the strength it should have had. Thank you also for upholding this ancient "dove tail" method of barrel making which has been used on millions of British shotgun barrels for a 150 years. They were first brazed together in coal-fired blacksmiths forges prior to modern gas torch systems. Even today these old barrels (think damascus pattern welded barrels and old steel barrels) are still being used in day to day shooting that had their lumps brazed to the barrels in a coal-fired forge over in the corner of the barrel shop.

Some gunmakers of today such as the Turks use a rolled pin to hold the barrel tubes securely to the mono-bloc prior to solf-soldering the barrel tubes to the mono-bloc. It seems to work OK. I also suspect that the Turks are using modern glues in lieu of solf-solder as well.

Last edited by bushveld; 12/07/23 12:54 PM.