Were actual flintlock revolvers being made back in the black powder days?
Indeed, there were such weapons, as these Collier Flintlock revolvers prove!
A common misconception is that revolvers are more of a modern-day invention that came about in the time of percussion caps. Revolving firearms go a bit farther back than that.
The Collier Flintlock Revolvers were made in both handgun and rifle forms. These weapons were only made in small quantities and were quite expensive to buy. Samuel Colt was actually inspired by the Collier Flintlock Revolvers.