A device for use with an ammunition reloading press, the device uses a "C" shaped split ring that is captured within a chamber with a slightly tapered frustaconical wall into the smaller end of which the bullet portion of an ammunition round can be inserted to a point where the bullet enters the C ring with a friction fit and subsequent withdrawal of the ammunition cartridge by operation of the press draws the ring into the increasingly narrow wall, decreasing the diameter of the ring and forcing a tighter grip on the bullet, which is then separated from the cartridge by further withdrawal and is removable from the device through an opening at the larger end of the chamber.