Whether I use an oil or water based lube, I use cold water for cleaning. It gets the bore clean.

Ny BP bullet rifles also get water for cleaning and those barrels also clean up perfectly.

The only lube I've heard of that maintains it's original greasy 'composition' inside a barrel after being fired, is bore butter, which by actual formula, I'm told is lip balm with wintegreen oil added. It is slippery/greasy (when warm), but adheres to the inside of the bore and builds up - in some rifles, ruining accuracy in as few as 12 shots. It must be removed with something that will disolve it - either boiling hot water, or a solvent. I suspect WD40 will disolve it by itself.

My brother Taylor, who builds fine rifles, used Neetsfoot oil all last winter - every Sunday shooting our bush trail walk. He uses nothing but cold water for cleaning and it did a splendid job - as always.

If you want to use a solvent, by all means do it - but - myown experience and that of others I shoot with says it isn't necessary. Note, we flush-clean our muzzleloading rifles. We don't merley use damp patches as some do. That's how bores become rusted. In ctg. guns, the open breech allows inspection, one end to the other. The bullet lube does not coat and become difficult to remove. Water & patches does it.