My Wife's first love was/is a Colt Officers ACP in .45. 20 years ago it was the only gun she needed/wanted and that was the biggest caliber she could manage.
And she was plenty accurate and fast with it.
Now at 56, a 110 lb cancer survivor, even with weekly training and serious instruction, she cannot manage a .45 or 9mm sufficiently to be confident, fast, or accurate. The smaller the .45 or 9mm? The more it beats on her, limits her ability to practice, and the slower accurate follow ups become. She still shoots her Officers ACP and loves it.
She'll carry her G42 and hot .380 hand loads and she feels extremely confident with this arrangement in a way few other pistols work for her. The chances of coming up against 3 skilled gunmen with no cover and taken unaware that a gunfight of 1 woman against 3 skilled shooters is so low given our lifestyles and daily exposure that carrying 50 rounds of double stack 9mm or .45 is overkill. If it could be done/managed we'd opt for that.
I feel that many folks are in a similar position. Mas Ayoob is a proponent of the .380 and Glock 42. As a first an only choice? No, no way. As a viable choice when the other options have been explored and exercised? Yes, it'll do. We have checked all possible options and trained hard. It's .380 for her in the G42 platform.
Ayoob acknowledges that for some it is the best compromise and sufficient to do it's job. I shoot the biggest caliber I can manage and that's a higher cap .9mm G26 or Beretta Px4 and an extra mag. I can do with my 9mm what she can do with her .380. I shoot and have the .45 option for myself. I pass as I am a proponent as well of shooting/carryng/training with the largest caliber one can manage in accurate rapid fire. I can't quite make my .45 skills match my .9mm proficiency as the recoils is just *that* much too much for fast accurate follow up given my level of skill and training. I rely confidently on 9mm. If I could not do that I'd confidently carry a .380 - most likely a G42 based on my limited but growing experience with that pistol/platform.
If I were a perp, I would not get into a gunfight with my Wife even at my skill level and knowing what she can do - in her hand, no one could tell it's a .380. She's confident and accurate with her .380. It's the best she can do. I think it's the best many of us can do and brow beating folks into feeling that if they can't bring a 9mm or .45 to bear in CCL they are unable to effectively defend themselves is defeatist - not realism IMO.
VooDoo