I think the basic design was set before 1900 and later changed from 577/450 to accommodate 303 cartridges. Wasn't used for handgun cartridges as handguns weren't really high on the list at that time.
I think the basic design was set before 1900 and later changed from 577/450 to accommodate 303 cartridges. Wasn't used for handgun cartridges as handguns weren't really high on the list at that time.