Please review the inserts from Lothar Walther

http://www.lothar-walther.de/249.php

Not sure you will get what you want as the pressure for the
cartridges you mention is above the operating pressure of
most shotguns

Ellis Brown has written a fascinating book
http://bundukipublishing.com/doublerifle.htm

Mike

Last edited by skeettx; 10/01/13 08:18 PM.

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