Thank you so far. That has filled in a few blanks. Canvasback, that is a nice quality gun you have there.
Marc, grateful for you information. Do you know if they do the book in English? I could just about muddle my way through but my schooling was in German and Spanish.
Pete, I have a friend who has a Pieper gun, a 16 bore sidelock non-ejector, with the stepped barrels. My little Bayard is a 24 bore and has survived in mint condition. I suspect it was brought back as a souvenier from the last world war and the new owner couldn't get the ammunition. Luckily I now have around 1,000 rounds for it. Lagopus.....