Took the gpr out hunting a few weeks back and the first day did not produce a doe so as i would with any other weapon, i let it ride with me in the nice warm pickup on the way back to the house. I un-capped the weapon to make it safe and left it in the garage overninght. Once again it rode with me in the nice warm cab back out to the hunting grounds the next day. A doe produced a very nice shot at 50 yards and the gun went pop instead of BOOM! what the hell happened i have never had this problem before i thought. was talking to a buddy that night about my horrible misfortune and he politely (Yeah right) explained to me what condensation was and what it is capable of in the muzzleloading world. So now i believe i will keep it cased and in the cold all the time after i load it and i will also shove a grain or two of powder through the clean out hole as extra insurance of a good fire. Just chalk that one up as another lesson learned the hard way.