I once knew two buddies who went deer hunting. Upon arriving where they were going to hunt, one guy realized he left his cartridges at home.
Fortunately, they had the same guns (.30-.30 Winchester lever actions), so the 2nd guy pulled out his shells to share. When he opened the box, he realized that he had grabbed a box with empties in it. (Note: Never put empty shells back in the box and close the box up so that it looks brand new.)
Fortunately, I had about 6 shells in my pocket that I could share with my buddy or that would have been one short trip.
Wait a minute, I didn't mean to imply that I did this. Uhh, it was a friend who did this. I would never be so foolish.