I could almost certainly strike my .355's with a light-weight hammer and not established them back again. All of that to express that using an precise 9mm die you should get plenty of neck rigidity. My current get for just a Lee 9mm carbide "undersize" resizing die that cuts down https://reloading-9mm64074.therainblog.com/35152751/not-known-factual-statements-about-9mm-bullets-for-reloading