.380 Ball, Rimmed
Interesting, indeed!
FYI--The blurb says it will shoot the .38 S&W cartridge. Actually .380 2Z is the British military designation for the .38 S&W loaded with a longish, sort of conical round-nose, jacketed 173 gr. bullet. The older designation was .380/200, from when short, stubby case was loaded with a rather blunt round nose 200 gr. lead bullet. It was called the "Super Police" load in the USA, and blazed along at some 600 fps.
For whatever this may be worth . . . .
Best regards,
Johnny
MOLON LABE!