I've had one ND myself....I was playing with a new Ruger SP101 I had just bought, dry firing it for a while, cleaned it, dry firing it some more, loaded it and set it aside (I was gonna go out back and shoot it in a minute). Some friends came over to visit and by the time they left it was dark so I wasn't able to go out a fire it. I picked it up, forgeting that I had loaded it (and didn't check it
) and went to dry fire it. Well, it didn't dry fire but I had a nice hole in the wall, it went outside...never did find where it ended up.