Redding Reloading 30 M1 Carbine Trim Die. Used in conjunction with a Redding Resize Press the Trim Dies offer the reloader the ability to trim cases without damaging the chamber or the shoulder. In some cases the case mouth will be damaged e.g. when resizing too long or oversized cartridges. Again the case mouth must be opened. With this in mind the reloader must ensure that the case mouth is properly closed before attempting to resize the case. An improperly closed die can damage a cartridge and cause handguns to misfire. Redding's Trim Dies ensure that the cartridge case mouths are trued up as near perfection as is possible with a cast die. Considered by many to be the finest in the business a Redding Trim Die will achieve near perfection in trimming single-handed cases. Package Contents: Redding Reloading Trim Die Redding Reloading 83180: 30 M1 Carbine Trim Die