Kevin, Over the last almost 60 years of shooting black powder, I have found that all these silly a$$ formulas for patch lube are BS. If you want something that works consistently and is readily available, saliva is the ticket. Plus it's free. End of discussion.
On the other hand, if you want something commercial, give Ol' Thunder Patch Lube and Bore Solvent a go. Available from Smoke and Thunder (Google them). Darn good stuff.
John (Bigsmoke)