Quote:
Typical group measurement is center-to-center of the two holes farthest apart in the group.
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This is correct.
Traditionally, meaning the custom began many decades back, folks would shoot 5 rounds. The best 3 of the 5 will tell you what the gun and ammo can do. The total of the 5 let you know what the gun, the ammo and the shooter can do. This means that usually 2 of 5 rounds will be tossed a bit by the shooter or the gun and ammo.
tipoc