NOTE ON LOT TESTING
It is often misunderstood that lot testing at one of the major ammo manufacturing facilities is accuracy testing. Lot testing, compares several on-hand lot #’s against each other to determine which of those lots are best in your rifle. Occasionally, the lot #’s on hand won’t produce the consistency your rifle is capable of and may require a broader range of lot #’s to test with. It is not uncommon for your rifle to shoot better with ammo you have on hand rather than the lots that happen to be tested at the time your rifle is there.
It becomes accuracy testing when that ammo is simultaneously shot through a
chronograph to determine the extreme spread (ES) and standard deviation (SD) within that string of shots fired in any given group. Without this critical information, it is impossible to determine if a ‘flyer’ in any given group is a concern of the rifle or a change in velocity of the ammo being tested. Bryan Litz of Applied Ballistics has volumes of information on this subject published and available for your consumption. We cannot and do not guarantee any outcome from lot testing