I agree, that's how I do it myself. I will clarify that lee makes the collet/mandrel neck die but sinclair and several other makers do collet die only for most all calibers, collet still doing neck expanding just no mandrel on the outside. I've owned both types and tried both, but preferred the Lee myself. They will build you a custom but it will probably be a while........I like using a body die and the collet die for the neck.