I would agree inside of home distances with the speed one can fire a rifle. I was thinking in general with a rifle where it could be used at distance and the effects of good hits would have more time to take effect.
Along those same lines with low recoil buck and a semi-automatic shotgun one would probably fire at least two to four rounds before they saw meaningful effects and the signal from the brain to stop pulling the trigger got to the extremities
Vehicles are a large part of why I'm considering shifting my longarm focus from AR to shotgun. As I don't have no-shoots in vehicles, not being LE, the ability to deliver a lot of lead in a short period of time before I make the decision to run like hell is attractive.
I have a friend who shot someone with a shotgun, with the proper load, at the proper distance. He was a Force Recon guy. He was in some shithole town in the sandbox on a roof, when Terry popped up on an adjacent roof or something similar. They both kinda surprised each other, he said. He fired 2 rounds. One into Terry, and one into the space where Terry was. Literally that pop-flop. There was no "shoot them to the ground...5-7x." It was boomdone.
Why? I think it likely one of the 00 projectiles clipped or disrupted the spine, and dropped the guy immediately, and he bled out very shortly thereafter. This is a buckshot and soft foster slug thing. Higher probability thereof. It is also why 300wm can drop animals like a boss. The TSC is large and violent enough to disrupt the spinal column and shock the cord whenbthe vertebra violently separate and return to their normal position. The animal then bleeds out before it regains its feet. This leads to the term "stopping power", because it literally IS....the round is disruptive enough to STOP something, and it bleeds out before it gets up. Now, as applies to handguns and so forth, it is rather misused, by and large.
Just yesterday, I was thinking about the chapters in The Hunting Rifle (1970) by O'Connor. He has one about how wonderfully adequate the 7x57 is, and how excellently effective the .270 Winchester is. And a chapter about how awesome the .375 H&H is if you can put the bullet in the right place.
That latter chapter is not quoted nearly as often as the others, for some reason.
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Not another dime.
Handgun calibers should probably be compared by their "pausing power".