The .38 Short Colt is a heeled bullet cartridge that was created for metallic conversion of old Colt Navy Revolvers from the Civil War era. It looks a lot like the .38 Smith and Wesson, but the case is slightly different. It was designed for use in the .38 Colt police revolvers, but it was discontinued in 1920 because it never really gained much popularity. Today, Remington offers a 38 Short Colt cartridge with a 125 grain bullet. You can use this cartridge in .357 Magnum revolvers or in a .38 Special, but accuracy might be slightly impacted.