I could possibly hit my .355's with a lightweight hammer rather than set them again. All of that to mention that with the actual 9mm die you should get loads of neck rigidity. Even if the chamber is outsized the act of sizing will reduce the skin diameter back again https://beckettdtjzu.buyoutblog.com/37554640/not-known-factual-statements-about-9mm-bullets-for-reloading