08-06-2024, 10:52 PM
Once you have a lot of brass fire formed to your chamber, all of the primer pockets uniformed and the flash holes uniformed, the difference in weight is directly related to the difference in case volume which is directly related to pressure, which is directly related to velocity. You are never going to get to single digit standard deviation with brass that varies much over 1% by weight in a cartridge as small as 6mm ARC.