I probably shoot around 10,000 shots with BP guns per year. With my colt .36 alone I shoot around 400 shots per month. I have ran thousands of rounds through that gun, and have replaced many parts in it due to wear. I have more black powder guns than modern ones. Here is my list:
1851 Pietta .36
1858 Pietta .44 Target (very accurate pistol)
1858 ASM .44 brass frame (First BP revolver, have had it around 11 years. Still going!)
CVA Bobcat .50 (cheap, but fun)
Pedersoli Frontier Rifle .45 (best BP rifle I have owned.
Single shot .45 CVA (no sights, can't hit a thing with it, but it's fun)
I use Remington #10 caps in all of the revolvers, but I don't use Remington caps on my rifles. I like the #10s because they fit very well, easy to pinch them, and are reliable. However I do not like #11 Remingtons. They are very short and hard for me to handle. In my caper (inline) they will tip over because they are so short. I am using the Dynamit Nobels on my rifles.