Hello Ami,

of course you are right, the soft solder was quite common but nevertheless Merkel had hold a Petent on this method of fixing the barrels O/U, please look here:

http://www.jagdwaffensammler.de/bockdoppelbuechse-gebr-merkel/laufverbindung-pat-merkel.html

I'm sure, your german allows you to understand it... ;-)
The only problem is, this Patent is from 1930 and the Gun of Texasjack is out of 1929...! But of course, Merkel would have had any other Patents.

Best Regards,
Gunwolf

http://www.hunting-heritage.com