Big Ed,
Nope, wrong again.
I concisely explained the problem with conventional neck dies in one short post, because I've used enough of them to PROVE through experimentation that the expander ball combined with the lack of case-body support IS the big problem. That's why I said there's no need to "isolate" the problem. It's been isolated enough.
You've never heard the old saying: "Insanity is repeating the same action over and over again and expecting different results."
