MOEncore
I believe it was a weather related issue... 90 degrees with 100 percent humidity... off and on rain. I was shooting a brand new container of Triple Seven FFG loose powder. I took 4 or 5 shots with my Encore using "Pellets" and dialed in the scope. I then switched to the loose powder and made 3 or 4 shots with no trouble. I then pulled out the .54 Round Ball Percusion and on the first shot was a dud. After trying to fire off 4 or 5 more caps I gave up and went back to the Encore. I loaded it up and went to shoot and.... nothing with this gun...ugh!
Weird - I shoot T7 also and i shoot all the time target shooting in the rain...(i'm knocking on wood right now) but I have never had a moisture absorbtion problem - T7 has really done well for me in wet weatherand I will spend several hours shooting- but, on average we normally do not have a high humidity. When shooting in the rain the jug sits on the tailgate of the pick-up but I do close the funnel snap cap and there is a cheap plastic tarp strong up to keep the rain from hitting the tailgate directly.
Almost sounds like one of those things that you got to be there to see it... type thing