SWThomas
This actually depends on what powder you use and what oil or metal preseverative you put in your barrel after you clean it. It also depends on what you want to do; at the range popping a couple cap and wiping the barrel is ok but if you are setting up to hunt and use alk you might be setting up to have some rust if you leave it that way for a while.
For instance, using black powder or pyrodex, I will scrub, after I shoot and before I go hunting I scrub with boiling water before I load. I use Rem gun oil in the barrel of those gun that I use those powders in and I use the alk and windshield washer mix between shots.
In the guns I use Blackhorn in I clean with a 50/50 mix of alk and Hoppes #9 and preserver with B&C synthetic oil in these guns I simply wipe well with dry patches load and shoot; when preparing for hunting I take out the breach plug and drop it in boiling water with citrus soap added then dry it grease the threads carefully put it back in the gun and load for hunting.
You really need to suit your procedure to the way you clean and oil. Lee