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- Feb 12, 2010
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I was just sitting here reading a book after loading some rounds and I heard a light *pop* followed by the sound of something small bouncing along the wood floor. I look over at the rounds I just loaded which were all set in a tray (primer up) and one of them was missing it's primer. All the brass was clean, I cleaned all the primer pockets, and I also made sure I felt an even pressure as they seated and that they seated fully. Is it possible that the change in room temperature (+10 degrees) caused the brass to expand enough and built up just enough pressure to push it out? Or could it be a flaw in the primer itself? I pulled the bullet from that piece of brass and tried seating a primer by finger pressure only into it and it wouldn't go so it definitely isn't super loose.