The .50 cal round I actually tried to fire 3 times, not knowingly though. I picked it out of the box to begin with and tried to fire. Nothing. Didn't think anything about it after waiting for a minute to make sure it didn't go off. Took it out of the chamber and stuck it back in the box bullet tip up. Minutes later I grab it again. Nothing. Waited...relized that it was the same one and handed it to the old lady to hold on to. Later that day I finally thought that I had ran out of rounds because I remembered taking the last five out of the box. Went to place the empties back in the box and see one more round and was happy to get to take one more shot. Nothing....same one as the last two....[>:]