Guess I'm not understanding you completely. If you only use the body die, and the body die only sizes the body and shoulder, and you said you don't use the neck sizer... How do you size the necks?
Are you saying you use both the body die and neck die each time you load? And if so, couldn't you do the same thing with a regular fl die or a bushing fl die? Wouldn't that defeat the purpose of the die by over working the brass?
These are questions I am asking to learn from not me trying to tell you that you are doing it wrong.