Cylinder swapping isn't historically correct. Cylinders back then didn't fit just any gun.
Is that why those Army purchase lists that accompanied each shipment of firearms never listed spare cylinders with the rest of the tools and supplies?
But in the novel "Bright Starry Banner" by Alden R. Carter, one of the Yankee officers had several "capped and charged" cylinders for his Colt 1860.
BORDERLANDS: THE GRAPHIC NOVEL
A story about a man, his harrowing journey, a vast frontier, and a great struggle.