[Battue]

If you wanted a competition choke from Ken Eyester, the choking started at the forcing cones, traveled down the barrel and then the choke was shaped according to what worked.
And the gun was most likely shot over and over until he consistently got it right. He tuned forcing cones, bores and the choke and didn't just work on the actual choke.

You wanted a POI 6 inches high with a flat rib perception, he made it happen. You wanted it 3 inches high, he made it happen...

Thanks for the reminder they were 1-2-3...