They on the other hand do have non-uniform lengths. If you don't believe me, take a batch of brass with exactly the same headstamp and evaluate their lengths - I have measured hundreds, they do to be a actuality vary in duration. Using the FC brass I calculated, Serious spread https://9mm-dirty-once-fired-bras97395.spintheblog.com/38081816/getting-my-9mm-reloading-brass-to-work