VodoundaVinci said:
Something like 70% of people shot with handguns survive even with multiple wounds and are often not hurt bad enough to stop assaulting someone.
That is correct and that is why militaries focus on higher velocity firearms that can reliably produce greater hydrostatic shock.
As far as I can tell, the recommended practice by tacticians is to shoot for the center of mass with .357, .44 mag or .45 ACP and to shoot a bit above that (high chest and head) for .32, .380 and even .38 sp simply because of their lesser hydrostatic shock factor.
Of course, in an emergency, I think one is more likely to shoot for the center regardless of the handgun one is carrying.
As I have personal experience of bullet wounds (I was a Medical Warrant Officer in the Navy/Marines and served on the ground in Cambodia), I can attest to the fact that lower body wounds can be just as fatal as chest and above, but it can take a long time to "stop" the person. It often took the Combat Corpsmen and the Medivac crews several hours to extract and transport wounded Marines and get them back to the field hospital (MAST Units in the Navy/Marines). And we saw many Marines with serious wounds in the belly and trunk that had not stopped them from continuing to fight. Of course, they did have two advantages helping them survive: (1) tremendous physical conditioning; (2) well trained Navy Combat Corpsmen with legendary skill at keeping the wounded alive for several hours. And the majority of those wounds were with 7.62x39 shot from a Chinese made AK-47 or a Type 56. (I was in during the 70s, so there were very few Russian rifles left at that point. Also, the Khmer Rouge were the enemies of the NVA, so they had very different weapon supply chains.)
The ballistics of the 7.62x39 averaged roughly 1,500 ft lbs of energy. (2,033 Nm)
(
http://www.ballistics101.com/7.62x39.php)
The new .380 I am carrying delivers roughly 200 ft lbs (271 N M) from a standard pressure round - ON A GOOD DAY.
(
http://www.ballistics101.com/380_acp.php)
So the 7.62x39 round has 7.5 times more energy to deliver. Of course, even the NVA used Geneva Convention approved ammunition and did not use (many) hollow points in either Cambodia or Vietnam.
From up close experience (as in I was involved in the surgery itself), I don't think I could say that the 7.62x39 did 7.5 times as much damage as a pistol caliber round; I would go for 3 times as much damage. So even rifle powered rounds did not "stop" Marines if they did not hit the right target zone.
And, in the legal videos I have been required to watch for my fun owner insurance, there are many references to the fact that simply presenting a gun with the intent to fire stops many casual assaults (especially where the aggressor has no firearm.) I am not proposing "brandishing", but if there is a borderline case and one feels life is in danger, then presenting and telling the aggressor "stop or I will shoot you" seems to work against non-gun toting and no-drug crazed assailants.
Of course, one cannot rely upon this factor. If the gun comes out, be ready to fire, and be justified or go to jail for a very long time.