Steve:
Nice to know there are still thinking people out there. Mostly on this august forum! And all I can say to your posit is that there probably IS a tipping point for the 12-bore. And personally, I think it's just below 3/4 oz. But precisely where, I don't know.
Those who would like to understand the truth of shotgun pattens are urged to get a copy of "The Mysteries of Shotgun Patterns" by Oberfell and Thompson.
Their discoveries were only enhanced by the one-piece plastic wad. Never refuted.
Best, Kensal
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