As with any thread that discusses Lee's FCDs, there is often confusion about what FCD is being discussed. Lee makes an FCD for handgun/straight sided calibers which F/L sizes the cartridge post crimp. Lee also makes a collet crimp FCD for rifle cartridges, that squeezes a small portion of the case mouth. A good tool. Lee also makes a few collet crimp style dies for handgun cartridges, also a good tool.