Ok. You’re confident in your conversation and history. As a teaching point, it’s potentially a bad principle to introduce into armed self defense. Maybe I’m digging to deeply into it, but I’d simply suggest to a person embarking on the arned self defense continuum to simply train to assess, decide, engage to stop, assess and decide.
Generally the widely acxeoted and well proven initial tactic is to fire twice to the center of visible mass, or if appropriate, the center of the torso from any angle, then assess and re-engage in the same manner.
But advanced tactics vary in application and technique and generally are not pursued nor taught to the average self-defense minded person.
Regards,
widely acxeoted ???