RE: Wet Weather Tips
I personally use the fingernail polish trick on my #11 caps on my C&B revolvers when I take them out into the back woods "instead of my 1911 that is" & keep the chamber fronts greased to keep em ready to fire no mater what the weather has to throw at me "well that I'm willing to go out into."
As far as the muzzle of my hunting rifle, my dad mentioned about those finger cots years ago for keeping the rain & what not out of the barrels of M16's I figure it'd be a good idea for a muzzle loader.