I should clarify.
Of course there have been "one shot stops" from pistol rounds. Even a .22LR. If you take out the central nervous system, then the ball game is over. Or if the person that is shot is preconditioned (from TV) to "go down" after being hit, that works too.
My point was simply that a handgun round does not exist that is capable of *consistently* stopping the bad guy with only one round. There is no holy grail of handgun rounds.
Either that, or you know absolutely nothing about firearms.
I don't claim to be an expert, but I've taken a couple of classes and I read a lot about guns.
What I've learned about pistols can be summarized by the following two points:
1) A handgun is what you use to fight your way back to your rifle, which you shouldn't have left in the first place.
2) When engaged in a fight with a handgun, you keep putting rounds on the target until the threat is stopped. You don't carry your magic "one stop shot" bullets, and then stand there and wait for the threat to drop after only one round.