Before the .38 Special became ubiquitous, the moderately powered .32 S&W Long and .38 S&W were popular.
GunMagopedia: .38 Special - The Mag Life
The Long and Short… - American Handgunner
Smith & Wesson's .32-20 M&P - Shooting Times
32 S&W LONG 98gr LD-RN PRVI AMMO - Rusty Wood Trading Co.
32 S&W Long Ammo at : Cheap 32 Long Ammunition
A History of Smith & Wesson Hand Ejectors - The Shooter's Log
What bullet substitutes 32 long revolver bullets? - Quora
Mild Shooting and Useful .32 Caliber Revolvers – Women & Guns
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Why the Best Snub Nose Caliber is .32