Took my smoothbore hunting this weekend and diddnt see anything to shoot. Decided late sunday afternoon the shoot my gun to unload it. Because cleanup is about the same with 1 shot as it is several I took the opportunity to do some shooting, as I have only been shooting black powder for about 1 year. The temp had been dropping all day with slight mist off and on. My first 2 shots went off without a catch. The third, however, misfired 4 times. Each time I blew out the pan powder, picked out the vent and reprimed. I noticed that the powder in the pan seemed "clumpy". My priming brass never got wet, and the powder inside it is bone dry. Is this phemomena common with weather like this. Are ther any tricks to overcome this while hunting. Whats going on here??