They on the other hand do have non-uniform lengths. If you don't trust me, take a batch of brass with exactly the same headstamp and evaluate their lengths - I've measured hundreds, they are doing for a truth fluctuate in length. With the FC brass I calculated, Serious distribute was https://9mm-casing85184.tribunablog.com/the-definitive-guide-to-reloading-9mm-luger-50669962