A friend has a smooth rifle that looks like it should be copied after something around 1790. It has a 43" octagon barrel and is 20 gauge. I would like to make one just like it but I can't find any documentation on a rifle such as this. I even tried to find a smooth bore barrel in 20 guage with straight octagon barrel and no one seems to make one. Any suggestions? I need pictures, documentation maybe and place to buy a barrel. I've looked in several of the Schumway books without any luck.
Regards
Regards