I use alcohol after the water cleaning process. Not for further cleaning, but to eliminate moisture. My method is: Cover the ignition channel, pour a small amount of alcohol down the barrel, cover the muzzle and slosh back and forth, then open the ignition channel to allow the alcohol to.be blown out while working a patch in the bore. This is especially effective in clearing a patent breech.
If the gun Will be stored for a while, the next step is a coat of rust preventative.
If the gun is coming out of storage and being readied for a hunt, I do that same alcohol procedure and leave it to evaporate completely (usually overnight) before loading.
This leaves a dry clean barrel and eliminates wet powder and/or goombah In the ignition channel.
If going to a range session, I don't do anything to clear or remove preservative from the barrel or flash channel. Just load and shoot a fouler or two. If the barrel is not over oiled, ignition does not seem to suffer if loaded and fired immediately. One can snap a cap or two if worried about the ignition channel, but my experience is that it's not needed if the barrel was not over oiled.
I NEVER snap caps prior to loading for a hunt. Snapping caps, even in a clean dry barre leaves cap residue that can quickly solidify in the channel. With a loaded gun, the back pressure from the powder going off serves to clear the channel with each shot. Not so with a cap only.
Probably TMI, but all of the elements of loading and shooting procedures are inter related. It's hard to look at one element on it's own without examining how it affects and/or modifies other elements.