>>> I get that it’s a dumb question, but what is the answer?
There is none.
Last 2 times I saw that happen, it was on Columbo and Monk.
Both times, a rat was involved.
(btw, The Lee incident was a blank round... not a real bullet)
Thee was also an incident where an actor thought he could fire a blank at his own head. Killed himself.
If I remember correctly, the Lee incident was a real bullet with a primer only, but the bullet lodged in the barrel. Later on, they fired a black through the same gun, which expelled the bullet at high velocity.