Would this ideal cartridge be a .38-40?
As I recall, the first modern auto pistol round, the name of which I forget (and which most other people don't remember either), was created with bullets intended for the .38-40. Was this the .41 Action Express?
At one time, both the .38-40 and the .44-40, originally introduced for rifles, were available in so-called high speed loadings, presumably not intended for revolvers. Somewhere out there in radio land are statistics for these loads no doubt.
Shoot low, sheriff. They're riding Shetlands!
Underneath the starry flag, civilize 'em with a Krag,
and return us to our own beloved homes!
Buy War Bonds.