The FCD is the last die many of my reloads go through. I don't "need" the carbide sizing ring in the pistol dies, but I don't mind it being there. As far as I can tell it isn't touching any of the cases.
The only rifle cartridge I crimp these days is the .444 Marlin and the FCD does a fine job at that.
Proud member of the NRA and Texas State Rifle Association. Registered and active voter.