When I load my rifle for hunting I run a dry patch to soak up any oil left in the bore, then with the patch on the jag pushed all the way down against the breech plug I fire 3 or 4 caps, the patch will catch any oil the blast pushes out of the drum, I then put a clean patch on and fire 1 more cap, pull the patch out and examine it for any oil ,if it is only burned a little with no oil residue I load the rifle, if there is signs of any oil on the patch I continue to snap caps until the breech is dry, then you are sure the drum and breech area are dry. If I don't fire my rifle while hunting I remove the cap and fold a clean and dry cleaning patch and let the hammer down on it and the nipple. I never bring the gun into the warm house, I leave it in the garage or locked in my truck. Another thing I do is, if I haven't hunted for a week or so I will take the cleanout screw out of the drum and dig out some of the powder and replace it with some ffffg priming powder. The only misfire my son or I have had is when a cap failed, when a new cap was put on the gun fired, this only happened one time in over 35yrs of hunting.
One thing about this procedure is you must make sure the gun is EMPTY I knew one fellow that forgot his gun was loaded from the year before and he shot out his ramrod, it was never to be seen again.
Steve C
I just noticed this thread was for flintlocks, I have only squirrel hunted with a flint but that will change this fall ,I have a fullstock .50 with a Douglas barrel and a Haddaway lock that I hope to make meat with!!