The 32 Merwin, Hulbert & Co Short cartridge was launched around 1883 and is basically a standard 32 S&W loaded for the Merwin & Hulbert Revolver. It is distinguished by the large lubricating groove on the bullet. There is a full discussion on the Merwin, Hulbert & Co. on the 38 MH & Co. page (Erlmeier, Brandt Ref. 328)
