I like that Single Action Buntline.
I have one like that in my collection that Autry gave to my stepfather. It was made around 1878, as I recall, and originally in .44-40. Later carried by one of Villa's guys in the Mexican revolution. Gene acquired it in the early 1970's and had it rebuilt as a .45 Buntline as a present for my stepfather.
John Wayne has fired it also. Kind of cool, huh?