The Miami failure is one in which the shot placement was not at fault. There was one round of 9mm Silvertip that, at autopsy, proved to have been directed straight at the perp's heart from the side but that failed to penetrate adequately to get to that organ
Ah, the 1986 Miami shootout.. where the vaunted, approved 9mm HP failed!!
FAILED I say!!!
Or at least the FBI review
said it failed. But did it really fail??? Sure, it "failed" to reach the heart, and it "failed" to instantly stop the fight, but the round MET ALL THE FBI REQUIREMENTS.
Pardon the rant, but its something almost never brought up in conversation about the shooting today. The 9mm HP met every requirement the FBI had. If it hadn't, it wouldn't have been authorized for duty use!
The bullet stopped approximately a half inch short of reaching the heart. IT was a lethal hit. Just not an instant stopping hit. The bullet penetrated every bit as much as the FBI said it had to penetrate.
However, in that one instance, the penetration the FBI required wasn't quite enough to give satisfactory results. The real world does that, every now and then, creates a situation out side of tested parameters, one that calculated values and testing didn't take into account.
The FBI review couldn't fault their "Hero" agents (though some of them did screw up royally) the guy who fired the 9mm round that "failed" did his part right. The round went where it was supposed to go. It went as far as it was required to go by FBI protocol. Just didn't happen to be an instant fight stopper, that time.
The FBI wouldn't admit their requirements were inadequate, but they did change them. They blamed the 9mm round, as noted, blaming the cartridge is easy and it doesn't fight back. And that's exactly what they did.
interesting footnote, after the FBI said the 9mm was not enough they reauthorized use of the .357 and the .45ACP while they searched for a new, better round.
They settled on the 10mm round, and when they had trouble with it being too much gun for some of their people, moved to a reduced 10mm loading. A few years later, when S&W offered the same performance in a smaller case round, one that would fit in 9mm frame size guns, they got all starry eyed and pounced on the .40 S&W "like a duck on a june bug". And the rest of the nation's police agencies mostly followed.
Now, with improved bullet design, that meets the current testing protocols, (penetration, particularly as that was the "flaw" before) they're dropping the .40 and going back to the 9mm. But, its not "back" in their eyes, as they are going to the "new" 9mm, not back to the old version. Bureaucracies hate admitting they might, possibly, somewhere, have made an error, let alone a mistake.
Might the fight have been stopped if that one bullet had gone just a half inch deeper? MAYBE. But also, maybe not. Heart shots are often immediate stoppers. But not ALWAYS. Deer hunters will tell you, with rifles (and a lot more power than a 9mm duty pistol) that sometimes a heart shot is DRT, instant stop. And sometimes, a deer can run an amazing distance with its heart, literally destroyed.
The bad guy in Miami lived about a minute after that 9mm hit. During that time he killed and wounded several FBI agents. And he was trying to get away in another car when he was stopped by shots to the head at close range.
They entire time he was active after taking that 9mm hit, he was bleeding to death, mortally wounded, but not physically incapacitated.
IT wasn't a failure of the bullet, it was a failure of expectations.
Back to .45 ball ammo for self defense, yes, there are much better choices, and if possible and practical, you should use them. I do.
But I am reminded of one guy I know of that did use ball ammo to defend himself, and he was happy with the results. He said, I shot the guy twice, he fell down. Both rounds exited.
Can you realistically fault that?? or expect better?