Robert, everything they said above is true.
BUT!
If you are just going to shoot the rounds in a pistol, there are easy ways to do it. I have been shooting real BP in my pistols for 20 years with regular, unlubed bullets. First I melt the crayon lube out of the bullets. I think they might do okay with that lube in them, but it is very easy to melt it out. I load the cartridges as usual, just no lube in the bullets. When I shoot them, after loading the cylinder, I squirt a glob of butter-flavored Crisco over the first two rounds to be fired, on the left side of the revolver. That's it. Gun runs fine all day. Cleans up easy later. I keep the Crisco in a little plastic squeeze bottle in a bag on my belt. I just do this for CAS, so I lube it at the loading table. It has never melted and run out on me, but I'm not walking around all day with them loaded that way. The bore of my guns are lubed with Ballistol, by the way. Depending on what you have in your bore, you may need to gun-scrubber it out and re-lube with something BP likes.
Note that this is for pistol only. My BP rifle rounds have soft-lubed bullets. I re-lube regular smokeless bullets for the rifle. They have small lube grooves but my longest rifle barrel is 20" and it is usually pretty humid around here, so they are plenty accurate for me.