Don’t think there’s a rule from which to predict results as IME it seems depend on the barrel. I’ve had barrels where the cold/clean round falls a bit outside of the group that follows ... and others that keep piling them into the same group. I think there are other factors that need attention to determine if they are also contributing factors. From oil in the bore to the way the rifle sits in the bags after that first shot.
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Old Guys Rule
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