Yep, but gotta make sure of a few things first.
I had a percussion black powder pistol 20 years ago so I'm going from memory.
You gotta find what size round ball yours will handle. I believe there's a couple different sizes of .44 cal round balls. As well as the right size cap. You also gotta decide what powder you will be using, black power or the newer cleaner replacement powder.
Pretty simple to load. Powder, wad, ball then some crisco over the ball to stop one cylinder from possibly igniting the other 4. ( I usually only loaded 5 so I had one cylinder dead to rest the hammer on) Also you can buy the goop to put over the ball instead of crisco, serves the same purpose.
The book that came with pistol should give you approximate charges for loading.
They are fun and can be surprisingly accurate. Also watch for the blown apart primers fucking up a rapid fire cowboy like shooting session. The primer pieces get jammed in the cylinder mechanism . Betcha this cost some fuckers their lives back in the day.