Thanks for the replies. My current flinter is a .62 caliber smooth bore trade gun, so cleaning the bore and breech is pretty much a snap! My concern was expressed by another, making sure the breech area is suitably dry to receive a new charge in the am.
For my rifles, I came up with a little thing I do that I think works well, but some might think is a waste of time. I find a brass cleaning jag that is small enough to fit into the powder chamber and after I've dried the bore and powder chamber as best I can, I heat that jag up in a camp fire and when it's cherry hot, I drop it down the bore and into the powder chamber. It doesn't have enough heat to even pass the heat on to the rifle's steel, but it has enough radiant heat to finish the drying process in the powder chamber. Once it's cool, I drop it out, put a lightly oiled patch on it and run it back into the powder chamber on the ramrod.
I suppose a little wd-40 would suck up the moisture...but I like tinkering around the camp fire!
By the way, I don't want to ruin anyone's fun...but really, I've discovered after 35 years, that many of us "over clean" our muzzleloaders.
I haven't heard one suggestion about filling the barrel and letting it stand for awhile.
Before I start the brushing/patching chore, I plug the vent or the nipple and let a barrel full of cold water sit in bore for about 5 minutes while I rest the brogans before the fire. Pour it out and refill about half way and plug the bore with a cork or a thumb and slosh it back and forth a few times. A couple treatmenst of this, and the water is coming out clear. That's when I start the brushing/patching. For my rinse, I plug the vent/nipple again and pour hot water in the gun and using a tight patch I open the vent/nipple and force that water out in a jet! Take care when you get to the bottom to turn the gun upside down before you withdraw the rod or you will get a lot of water dribbling out the muzzle from the stuff that got around the tight patch.
For a three day hunt, I don't pull the lock and take out the vent or remove the nipple, until I'm back home and getting ready to put the gun away.
My bores remain bright all the way to the powder chambers and breeches with about the same effort I put into cleaning the bore of a smokeless gun.
Thanks for the replies.
Dan