I have been asked to recreate an Alfred Gross rifle. I have good photos of a very fancy silver mounted one and a plain iron mounted one. What i don't have is data. Specifically, I am interested in whether the barrels were straight or swamped. To the best of my memory, they were more straight than swamped, but I don't know if I could get away with using a straight barrel or not. If anyone has any data on the barrels, I would appreciate it. I am trying to make something as close to an original as possible. Thanks.