I could probably hit my .355's with a light-weight hammer and never established them again. All of that to say that using an real 9mm die you'll want to get a good amount of neck rigidity. You might want to Get hold of RCBS to view If they're however generating https://reloading9mm33072.is-blog.com/44373029/indicators-on-9mm-brass-for-sale-you-should-know