Excellent!
The reason the lube on the patch cannot be oily, is that oil will disrupt the patch necessary leaving the bullet at the muzzle. If it or parts of it adhere, accuracy will be negatively effected.
"The Paper Jacket" and "Loading Black Powder Rifle Cartridges", both by Paul Mathews can and will be a good addition to anyone's library.
In the books, Paul writes of friend & gun smith who was muzzle/breech loading his rifle- to good effect, & using paper patched bullets. Too, he was using a thumb tack as a 100 yard target.