We attended a performance of the opera "Werther" by Jules Massenet (based on Goethe's novel "The Sorrows of Young Werther"), where the hero kills himself with a shot to the chest from a dueling pistol.
Thereafter, I asked the medical students in my circle of friends how long would a tenor be able to sing with such a wound before expiring (presumably, a 0.50 caliber ball).
Some of them had exposure to the ER at the University of Chicago hospital, the main trauma center for the South Side, and they all thought it would not be long.