[Tom2]

Hatcher says: ".32 Short Colt, .320 Revolver. These are old cartridges, (writing in 1935) designed years ago for arms that are now obsolete. The .32 Colt was originally used in Colt revolvers, while the .320 revolver cartridge was a foreign cartridge made to fit the Webley, Trantor, and other european revolvers of this size. The .32 Short Colt will fit the revolvers chambered for the .320, and the .320 can be used in the Colt revolvers of .32 Short caliber, so that these cartridges may be used interchangeably. They are black powder cartridges, with outside lubricated lead bullets. The .32 Short Colt is loaded with black or smokeless powder; the .320 with black powder only. While these cartridges resemble the .32 Smith and Wesson, they will not interchange with it, as there are some differences in dimensions." See the picture. Note that the Colt looks like a giant centerfire .22 short, with the outside bullet. The chambers of .32 Colt revolvers were bored straight thru, .320 inch diameter. The smokeless load was reportedly loaded to 810 fps from a 6 inch revolver, faster than the little .32 short S&W by alot. Smokeless powder probably a no-no in that particular gun, if you could find ammo.