30-223 Reamer
I used a 223 Ackley reamer ( dave kiff ) and a .308 throater.It worked good. For dies,I modified a Lee 223 ack.FL. to accept a 30 cal. bushing while bumping the shoulder back at the same time.... neat little cartridge.
I was inspired by Dave King ( King`s Armory ) from Texas shot next to him at the 2008 "F" class nats.... he used a 7-22 mag. for silhouette.Called it a 747, and did well with it....