Hi, Guys:

Question on antique firearm a friend has ended up with..

Firearm is a Harrington and Richardson 0.38 calibre 5-shot revolver
believe it was made between 1886 and 1897 (?)

An "American Double-Action" believed to be series 1 rev 2.. based
on co. name not stamped on barrel

Does it accept 0.38 long Colt or short Colt? Or something else?