Found a well written article that told me what I wanted to know about black powder revolvers. . .
http://www.gunsamerica.com/blog/percussion-pistols-a-handgun-when-you-cant-buy-a-handgun/
I have owned and been shooting cap and ball black powder revolvers for over 40 years and one thing the article did not mention is that if put a bees wax wad (cut out of a sheet of wax with a .45 case) on top of each lead bullet in the cylindar after loading, it allows you to fire several cylindars full of black powder without fouling. By adding some Butterbore to the cylindar pin on an 1858 Remmington I have been able to fire almost 100 rounds without fouling.