When I was living with another guy during college he had his dads 44 mag. For some reason he had a round in the chamber. He was "cleaning" it. I was sound asleep. Apparently he wound up playing around with it and the hammer dropped on the round that was in the cylinder. The round fail to fire. It had a dent in the primmer where the firing pin had struck it. Scared the crap out of me when I found out about it the next day. I don't tease him about it because this was not first time he had done it. I no longer live with him.