Yep. Me either.
Dr Fackler's work comes down to one thing where he talks of a man being shot twice at point plank range in the torso with a shotgun. The attacker never dropped his gun and he turned and walked until he hit an entry door that prevented him from leaving until he eventually slumped down and died. Said he couldn't explain it.
Well I can. First mistake was the defender shooting at the wrong body part because he trusted his shotgun. Then the defender stopped at two shots when he should have launched three. If he was out at two, he should have fed him the gun. It's just that simple.
And no handgun has the stopping power of a 12 ga. So you need to be prepared and not simply educated. Odds are for hunting, NOT self preservation. And just because a guy does eventually end up in the morgue, doesn't mean that he wasn't able to send you there too.
Self defense isn't a gun, it isn't a caliber, it ain't a load, it's an attitude. The willingness to use a gun to places and enough times with the desire to survive.
That's my point. That's why that 32 will work. That's why any gun you have can save you because you aren't trying for a power level or a wound channel, you are going for God's guarantee, NOT Dr Fackler's opinion.
Research like Dr Fackler's is valuable if kept in perspective but it can also give the inexperienced a false sense of security that will get people killed.