The only book I know of; there may be others and someone will come up with an answer, is 'Encyclopaedia of Shotguns and Other Game Guns' by A.E.Hartink I think the book was originally written in the Netherlands but English translated copies are available ISBN 1 84053 116 9 It lists a lot of different gun makes and their specifications and models. There a few pages on Bernadelli listing and illustrating various models. A useful book to have on the bookshelf. It should contain what you say you are looking for. Lagopus…..
