Since you asked:
Living in Las Vegas, he was sharing a house with a woman (expense sharing only - no naughties). Hubby belonged to a gun club and would meet up with his buddies on a regular basis.
The lodger had a couple of hours off and so he took her with him to the gun club and she was mighty impressed. Apparently she wanted to impress her friends, and so got his gun and showed it off to them. She then loaded and cocked the gun, as she had no clue what she was doing, and put the gun back in its box.
Hubby and friends would meet early to play cowboys and would take turns in getting breakfast for everyone. He got up, grabbed the box with the gun, went downstairs and was heading out when he stumbled knocking the box against a table - and the gun fired blowing a hole through the top of the leg. Only just missed an artery and was eye watering close to making him speak soprano for the rest of his life.
By the time he came out of hospital the lodger had moved out.
That was about 35 - 40 years ago. They X-rayed it today and have found either gunshot fragments, or calcification.