In my ongoing study of Kentucky double rifles, I can't recall any octagonal to round American swivel breeches. Some late percussion American swivels have full round bbls, although they seem to be a distinct minority. Many old world Jeager swivels have an octagonal rifled barrel and round or part octagonal smooth barrel on the same gun. American swivels with swamped or tapered bbls are much better balanced than those with non-tapered bbls, reinforcing your good idea of octagonal to round bbls making your gun feel better. As I gather more data, I won't be surprised to find some American late perc ones as you describe, but will be very surprised to see an American flintlock like that. (Anybody who can surprise me will be well received and much appreciated!) I think your idea is a great one for function, and I would like to include such a rifle in the "Contemporary" section of an eventual book on Kentucky double rifles. However, in light of the ongoing discussions on this site about rifle building and schools, thicken up your skin before posting pictures
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I will be traveling from our Alaska home via motor home throughout the Lower 48 from June, 2013 through June, 2014, educating our kids about their country, and would like to examine as many Kentucky double rifles as possible during this coming year while on our trip. I will be delighted to have my double rifle impressions and understanding expanded as I travel, as well as having the chance to meet and put faces on other Kentucky rifle students and enthusiasts.
Bill Paton 907 230-3600
