They having said that do have non-uniform lengths. If you don't trust me, have a batch of brass with the exact same headstamp and evaluate their lengths - I've measured hundreds, they are doing as a point range in length. Using the FC brass I measured, Excessive spread was all https://9mm-dirty-once-fired-bras42851.blogminds.com/5-simple-statements-about-9mm-dirty-once-fired-brass-explained-34931455