For the purposes of the op original question, the wilson case gauge will do exactly what he needs done. His problem stems from neck sizing and not full length sizing and moving the shoulder back properly. Which, the wilson case gauge will help him with.
https://lewilson.com/case-gage/
Evrything else u are talking about is extra for the moment. Until he full length resizes the brass and tries it, theres no need to complicate him any more than this step.
https://lewilson.com/case-gage/
Evrything else u are talking about is extra for the moment. Until he full length resizes the brass and tries it, theres no need to complicate him any more than this step.
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