They even so do have non-uniform lengths. If you don't trust me, have a batch of brass with exactly the same headstamp and evaluate their lengths - I have calculated hundreds, they are doing like a actuality differ in duration. Using the FC brass I calculated, Extraordinary spread was all-around https://9mm-casing74173.wizzardsblog.com/36286665/details-fiction-and-9mm-reloading-brass