Here's one I never considered

[Hawkmoon]

7.62x25 Tokarov in a 1911.

https://www.shootingtimes.com/editor...-tokarev/99440

It turns out the case rim diameter is the same as 9mm, so with just a conversion barrel you could make this swap using a 9mm or .38 Super slide, and a .38 Super magazine. I think if I were doing it I'd probably handload to get ammunition with the same C.O.A.L. as .38 Super so the rounds will fit properly in the magazine -- as the article states, the 7.62x25 is too long to fit a standard .38 Super magazine at the proper angle -- to go in the magazine the rounds have to be loaded severely "nose high."

I'm off to see if any of those conversion barrels are still available.

[Jim Watson]

That one just cropped up on another board and repeats all the drawbacks I had heard about before.
Handloading would be the fix.

Consider that a .38 Super will drive a 90 grain bullet over 1500 fps and I expect a 9x23 would beat that.

[Hawkmoon]

Unfortunately, the barrels no longer seem to be available from either Numrich or J&G.

Probably just as well. I don't really need another caliber to load for.