It really depends on the temp. In the summer it's hard to beat mutton tallow for any kind of black powder bullet lube. In the cold months, bore butter or crisco will do, but I have had more fouling issues with crisco. If you keep the mutton tallow in your pocket, it works in the cold too. I also use it instead of gun oil to prevent rust on the metal parts... sort of my go to goo for all that stuff. Everyone has their favorite. I used to use "moose milk" for a patch lube before the mutton tallow, it worked good but was just one more thing to mess with.
MAC trained killer