For those searching for data there is another fine article by Brian Pearce in the current, #351, issue of Handloader magazine on the old .38 S&W ctg. In a top break Enfield revolver no less!
Back in the day, the .38 S&W was THE revolver cartridge.
The British were always about their "Manstopper" military ammunition and the 38 caliber was no exception. They used .361" 200g lead bullets for their 38 British Service Revolver during WWII. Bullets are available at Matt's Bullets.
They used .361" 200g lead bullets for their 38 British Service Revolver during WWII.
.358 cast bullets are satisfactory. .38 S&W SAAMI tolerance specs allow for bullets having a diameter down to .355.