Don't forget the potassium nitrate... very hygroscopic stuff. I deer hunt exclusively with a flintlock. A damp day will often turn my pan powder into a damp lump that is near impossible to ignite. This has happened on some days that I was sure there would be no problem, so did not check. At the end of the day, I was left wondering how long I had been carrying a dead rifle. Then often, while hunting in the rain, I check my pan every hour and am surprised to find it is still dry. Go figure. "Keep your powder dry" was good advice 200 years ago, and still is. A few grains of bullseye under a charge of damp black powder and shot might be just enough to leave an obstruction in your bore.
