throwaway for the obvious reasons... take this as you wish.
I am a person who has drawn their licensed handgun in self-defense, twice, separated by ~25 years and hundreds of miles. One an attempted robbery or interrupted break-in in a rear parking lot by two men who probably thought I had access to the building, the second by a group of three that split and approached quickly from two sides on a city street. In neither case did I need to fire. I had situational awareness that these people were coming toward me to do some kind of harm and the fact that I was absolutely prepared to kill in my own self-defense caused these would be criminals to stop and run away.
From what you are saying, it looks like you also practice drills, at least semi-regularly. I think that is key, no matter the caliber. Hell, even using pepper spray should be exercised once or twice a year.
I am a person who has drawn their licensed handgun in self-defense, twice, separated by ~25 years and hundreds of miles. One an attempted robbery or interrupted break-in in a rear parking lot by two men who probably thought I had access to the building, the second by a group of three that split and approached quickly from two sides on a city street. In neither case did I need to fire. I had situational awareness that these people were coming toward me to do some kind of harm and the fact that I was absolutely prepared to kill in my own self-defense caused these would be criminals to stop and run away.