But before I started, I had 5 rounds of 85 grain XTP's on top of 2.5 grains of Trailboss that had been sitting loaded in the revolver in the safe for better than a year. Four of those went "Pffft" with lots of smoke and either just barely lodged the bullet in the barrel or stuck it just a little out of the case; I had to push the bullet out or back into the case each time. The 5th didn't fire the primer after 2 strikes. Left a lot of soot across the cylinder and a lacquer like brown covering near the end of the cylinder. 5 more identical rounds, loaded at the same time but kept in a plastic case, fired normally. So, why just the rounds in the revolver? Moisture? I live in Kansas and the humidity seldom goes above 35% in the safe and it's in a dark cool environment. The only variable, though between these 5 and the ones stored in a case is that these were sitting in the revolver during that time. How can I trust keeping it loaded if this is going to be the result?