pistol using a semi-rimmed cartridge such as the .25 ACP, .32 ACP or .38 ACP is effected at the rear of the chamber as shown below. melcon s. lapinaSlide174: The proper seating of bottlenecked rifle cartridges of the three types (rimmed, rimless and belted) is shown below. melcon s. lapinaCommon Domestic and Foreign Headstamps on .22 Caliber Rim Fire Cartridges : Common Domestic and Foreign Heads