You gents are causing some serious grins this cold & rainy morning. One almost has to ask about a 'turkey' designation connoting more, but I shall refrain;-) Hahaha
Little doubt there is something quite positive to be said for 'late bloomers', but I would think it more a function of the ammunition itself than any specific 'magic' choke configuration/designation; e.g., 3.5" 12ga. 1.5oz. BBB 'Black Cloud' ammo. Wads look like miniature rocket ships w/no petals and small cuts that become 'air brakes' after firing in the bottom portion of the shotcup. I've not used it personally nor patterned it in anything either, but have seen some large waterfowl taken w/it to good effect [DRT] at what I would judge to have been 45yards or perhaps a bit farther. The spent wads I picked up did not show signs of any plastic scoring, they did not appear to have scruffed at all on their outer periphery. I was impressed.
This is of course both empirical and anecdotal. One would have to do some tests at progressively greater distances to show there was, in fact, a 'later bloom' taking place when compared with more conventional ammunition.
I always thot the little webbed bags of shot loaded back before the turn of the previous century showed a clear understanding of the benefits of the concept, even if thay didn't have the correct material(s) at hand to achieve it.
