Don't forget the .41 Magnum. Ballistics are top notch. Like the 10mm, a great rd. Never really caught on, especially when the politics got involved.
Yes, there are the lovers and reloaders that swear by them....But they are the extreme minority in the scheme of the evolution of ammo.
The .380, even the .32, were once not even considered worthy as a primary carry weapon. The ammo evolved, and became a heck of a lot more effective, and the sales in those calibers skyrocketed.
I still want a .357 Sig barrel for my S&W M&P as the mags will work for both,...but I won't stockpile the Sig ammo,....