I got a couple huns on opening weekend that were just barely dry from having hatched. But, a buddy flushed the flock and those were the only 2 that flew close enough.
Prior to pheasant season, my shotguns have Cyl chokes and I shoot 20Ga AA/Fiocchi target loads in 8's or occasionally 7.5's.
When pheasant season opens, it's still a 20ga, but, I swap over to 1oz #5's and IC chokes. It's fairly rare that I move to a 12Ga before Thanksgiving. Once I do move to a 12 it's still an IC choke but 1 3/8Oz of 4's or 5's.