From an earlier IAA Forum discussion, the so-called “8 mm S&W Experimental” is, in fact, a .32 WCF specially loaded for the S&W .32-20 Hand Ejector 1st Model (1899) revolver. It features a solid-head case and a 105 gr metal cased bullet. It was manufactured by UMC for S&W in 1900, and its correct factory name is “.32 S&W Winchester Model”. I will keep it here for reference purposes only
