Actually carrying and using a flintlock in the field under hunting conditions is a very different experience.
Rain, snow, heat, humidity, bumps and knocks from lugging it around all day. I have found the so called
rain proof pans with the ridge to be about the worst for keeping my prime dry. I like to work on the pan /frizzen fit until it looks tight when held up to a bright light. With this level of fit, you can prime the pan with the lock out of the gun, block the off side with your thumb, put the lock into a sink of water, pull it out and the prime is still dry. A little lube to seal the barrel /lock line , along with a leather cow's knee and I hunt in all kinds of weather. I use my flintlocks almost exclusively when hunting everything from deer, bear, geese, ducks, partridge etc. and the learning process was long and often frustrating, but worth the effort. My recently completed Chamber's Edward Marshall .62 cal is my new moose gun, and that pretty much means wet snow, rain and life in the bottom of a canoe. I have every faith in it's reliability.
By the way, keeping the prime away from the vent is an old belief , now disproved by actual timed photography. For hunting I make sure that my pan is at least 1/3 full, and the powder is against the vent.
Works every time.