Does the photo indicate where it might have been taken? These portrait photos are usually partially "staged," such as the dog at their feet, pistol in the belt, and dead bird in the stone between their shoulders. I mention this simply because some of the items may have been borrowed for the photo shoot. Both rifles have exaggerated spurs coming off the guards' bows, which suggests to me a little farther south than we might first think, SC, GA, MS, etc. The full-stocked rifle, when enlarged, looks like it has an extended "pistol grip" carved into the butt stock... you can see its bottom end when enlarged... which is a really different detail.
Shelby Gallien
