Re: lock cover
Home made? Saran wrap.
I made a 3/4 cover out of cotton twill. Water proofed it. Folded over. Fairly loose. Long enough to cover the rifle down to the wrist. The first 6 inches is sewn for the muzzle to fit loosely into. The rifle quickly drops out of the bottom.
It folds up small and is in my bag at all times just in case of a storm or miserable wet weather.
This next will drive a lot of people nuts, but I don't ever prime until I have a possible shot presenting itself. Hammer all the way down/frizzen forward. If I were on watch in a deer drive I would prime....common sense, but still hunting, slowly working off a ridge? I'm not hunting grouse. If the deer is moving so fast that the pan can't be primed I figure I shouldn't be taking the shot anyway.
Along with not priming, I take a small piece of electrical tape, fold over the top for a tab and with the rest, cover the touch hole/pan to prevent humidity...moisture of any kind from contaminating the main charge. It removes quickly and priming only takes seconds if prepared. The plunger style pan chargers work well. I've never suffered a slow sizzling cookoff, or a flash in the pan since doing this.
No one can ever make me believe that the old timers walked around hunting deer with the pan primed all day. I just can't believe they put themselves through the periodic dumping...powder waste, and ignition issues.