[weseeeee]

I agree that you can't have enough caution when dry firing! I remove the mag, lock the slide to the rear to clear the chamber. Then visually and physically (I stick my finger in the chamber) check to make sure it's clear. You can't be too safe!
I recently heard a story from a competitive shooter that dumped the rounds from her revolver but failed to count them, and the empty cylinder holes. As she started to dry fire she blasted a hole in her dresser! It can happen to anyone. Stay safe.