"Is the .380 cartridge underpowered?" The short answer is "yes". That being said, it is still lethal. Know it's limitations and practice/plan accordingly.
Why buy a .380 when I can have a 9mm in practically the same size?
I see what you're saying, and wouldn't argue if that's what you decided. As to other folks, they might say:
First of all . . . practically . . .
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I'm not a LEO or a Coroner. I do analytics. Seems to me, in all of these caliber debates, people are trying to use the probability of one event to predict the probability of another event without knowing if they are correlated.
As a civilian CHP holder, I carry to stop a threat that could kill or severely injure me or my loved ones (and possibly a stranger depending on circumstances). The statistic that matters to me is how often a particular caliber and type round failed to protect a defender from death or severe injury when it was fired in self defense and struck the BG.
One extreme could be that every BG that was shot with a .380 died, but before they died the BG was still able to kill or severely injure every GG that was using the .380 (or any other caliber).
OTOH, the other extreme would be that no BG was ever killed with a .380 fired in self defense, but no GG that used a .380 for self defense was ever injured or killed either. That would be pretty effective.
It's what happens to the GG that fired their weapon in self defense that matters (again - pick a caliber) .
The outcome for the BG might be relevant if there was some data that showed that the outcomes for the CHP GG and the BG are correlated. I've looked. I haven't seen anything that relates the two things.
I see what you're saying, and wouldn't argue if that's what you decided. As to other folks, they might say:
First of all . . . practically . . .
That's a teeny-tiny 9mm there, but I won't be hiding it in my swim trunks. I have a photo of me concealing that LCP in my swim trunks (I'll spare you).
Secondly, some of them are just kinda classy . . .
I'd imagine some people might answer, "That's what I have, and I don't have money to buy something else."
/.... I realized that when toting my 22 on a hike quick, accurate, and multiple shots, were going to be the key to stopping that threat. Keep shooting until you see results.
I'll be honest, the 22 was the most frequently carried pistol I had. and I was glad I had it when I came across a pack of three feral dogs. My training paid off, I escaped without so much as a scratch. The dogs? Well, none escaped.../
/....Yes, I feel the 380 has what it takes to protect your hide when called upon. Apply liberally with enough to see results before letting up. Oh, and prior practice helps.
Yes, Dr. No, and he was given a .32 caliber pistol.
I have often heard this. I have never fired a PPK or its variants (not counting a the new .22) but in the past folks complained to me about the recoil of their PPKs and I didn't know what to make of it. I don't recall having significant recoil in my .380s.
I read somewhere that an Army MP stationed in Germany in the '70s asked a German policeman why they carried 7.65 (.32 ACP) chambered Walthers instead of the 9mm Kurz (.380) version. According to the cop, 7.65 penetrated car doors better.
If I were required to carry a pistol of that type, i would seriously consider a quality 7.65 pistol loaded with Euro-spec ball ammo. More penetration, less recoil, possibly more accurate, and one more round in the magazine.