Rod, if you're truly interested in the practical use of these guns, you owe it to yourself to read this book.
http://www.gunblast.com/Bates-Cumpston_Percussion.htm
Cumpston is someone I consider a friend but more than that, he's a knowledgeable longtime shooter, an excellent writer- and one who don't turn out 'company line' crap for anybody. If Mike writes it- you can take it to the bank.