Hi Daryl,
I’m guessing it’s a round ball rifle due to the ~1-90 twist and roughly 1880 date.

Come on up? I’d love to......except, has not your beloved PM Turdeaux and P.Q. oriented Politicians made 8 Bores illegal?
...anti tank or anti aircraft weapons don’t you know.....

So.......You had best come on down to the “Peoples Republic of Colorado” to do a video.
Have guest room, 3 drooling Labradors, and several different Single Malt Whisky selections.
-Mike