They however 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 like a fact vary in length. Using the FC brass I calculated, extreme distribute was about 10 hundreds. https://9mmbulletreloading18528.buyoutblog.com/36696845/how-9mm-reloading-brass-can-save-you-time-stress-and-money