This year, for some reason, I switched to all mod chokes for late season grouse. My thinking was spookier birds=longer shots. (Normally I shoot improved all year long with pretty good success, or go to improved in one barrel and mod in the other. Well, I haven't been able to hit a bull in the a## with a base fiddle lately. I'm just curious if anyone else adjusts chokes as the season draws to a close and, if so, what do you switch to?