Wet Willie said:
Anyone here get caught in downpour with traditional gear ... like a horn and pouch?
I have, WW. I got caught in a hard rain many years ago on a flintlock deer hunt, back before I understood the problems of flintlocks in the rain. Had to quit hunting, so I set out to learn how to avoid that. I no longer am very concerned about hunting in the rain, in fact, have many times waited for a rain to go in. I've hunted squirrels successfully many times in the rain, have even taken one tom turkey.
Now I always do certain things:
I always have a small "cow's knee" in my pouch to cover the lock with. It is made of soft buckskin so it folds into a small compact bundle that fits into my pouch easily. It is kept well lubricated by periodically rubbing lube into it and heating it so it soaks into the leather. I'm never without it, even on dry hunts
One of the things which I figured out that surprised me was that on most guns water can run down the joint where the barrel and stock come together and that feeds it straight into the pan, even when it's closed. To prevent that I rub a bead of my beeswax/lard lube into that joint for about a foot from the pan forward.
I keep the muzzle down a little if it's actually raining.
My shooting pouches are all treated with oil of some sort, Sno-Seal, lube, etc., so that they can stand up to even some hard rain for a while.
Rain can get into the spout of your powder horn even with the stopper in. I wrap a piece of buckskin over it, and if I have to use it in the rain I find something to shelter it, tree, bush, me, whatever, so rain can't hit it directly. Not even the highest humidity causes any problem, but a few drops of liquid water will put you out of action in a hurry.
Actually loading in a hard rain can be a big problem if you can't find some temporary shelter. Keeping the loaded gun in shooting condition isn't a problem, I've carried one for 8 hours in a steady rain and had it shoot instantly at the end of the day, but it's tough to reload without getting your powder too wet to shoot.
Hunting in the rain can be a lot of fun, and I find it satisfying to know I can manage the old guns under difficult conditions and keep to the field. Learning the skills of the old boys is a big part of why I shoot black powder, and few skills show up such quick and obvious results.
Keep your powder dry.
Spence