I thought in the early 1990s Canadian police agencies put out an extensive report extolling the virtues of 40 Smith. Because it was everything the 38 +P was supposed to be? A gun article I skimmed through at Milarm.
And really it shouldn't fade away. If the frame is built for it, those four plus inch something barreled compacts of late 1990s are very suitable for ten round capacity pistol.
Example: Sig once made this in perfect package then inexplicably dropped it from production.
Oh, I see nothing wrong with 40 somethings. Got a couple old one's.
But trying to get the public to try to adopt them is another thing.
Always thought of them as a bit of a niche thing... perhaps even a specialists tool.
Joe Average doesn't seem to have much love for them though. A little brisk and expensive when a 9mm will do 80% of the 40's capabilities...but cheaper, easier to source... well everything in 9mm.
Everyday carry... you know it's going to the 9 x 19. An enthusiast might pack a 40...but Joe Average isn't going to.
If you knew that a situation might occur... bump in the night. Open the safe and grab the best tool in your chest... if there is a 45 in there, I'd bet 90% will grab it first.
This is not new, rewind the clock. 38-40, 41 LC and 38-40 in the charcoal era. Why did they fail to gain traction? Better than 38's... almost as good as 44's and 45's.
Because they really don't appeal to Joe Average. He might toss a 38 in his waist band or glovebox... it'll do for just in case.
But when something goes bump in the night, 45 is better. Or 44 something in a Wheelgun.
Professionals might see the benefits of a 40, better capacity than a 45, more Zang than a 9mm... but they are a niche thing and kinda always have been.
41 LC, obsolete
38-40, close to it
41 magnum, who here has even seen one?
10mm seems pretty obscure
40 Smiths, well LE forces 'were' using them.
People trained on them might like them, Joe Average doesn't seem fond of them. Too brisk, too noisy and they are penetrators... perhaps too much so. Blowing through the bad guy isn't always Plan A. Sometimes it's better to not have a through and through shot... family in another room? It might be said that is why 357 magnums or SIG's fail to topple the 38 special or 9 x19 as most prolific overall.
Merely my ponderings.
That and 2$ will get you a coffee.
Cheers on a cool morning.