Those believing that components need exact weights and prepping might want to call Sierra Bullets (1.800.223.8799) then ask how they get 1/4 moa at 200 yards with their best match bullets fired from unprepped & unweighed cases, metered charges and never work up a load with new lots of powder or primers; from full length sized cases in SAAMI spec chambers.
Note that all cases of the same weight will have the same volume when pressed to chamber dimensions at peak pressure. As they all don't have uniform wall thickness, how much out of round they are after shrinking down after firing, effects their volume and water capacity. As a case goes from perfectly round to more egg or oval shaped, there's less area inside for any body diameter. If the case is flat, it's capacity is zero.
Last edited by Bart B.; November 16, 2012 at 11:04 PM.