My Investarms is a .54 cal with a 1/66 twist It likes a .535 ball with a .015 lubed patch. I can usually find these shooting supplies at my local Sportsman Warehouse.
The company that sells prim all also sells cap makers in #10 & #11. I purchased the #10 cap maker and prime all. It worked great in my 1851 Colt Navy replica. My next test would be to see how well it will work with paper cartridges.
I use to use spit patches, the patches were precut and I would pop one in my mouth then stuffed it down along with the ball. I got ahold of a different brand of patches and they tasted awful, I now use pre lubed patches. 😝