My standard pheasant choke setup is LM/IM in the afore mentioned Citori Superlight with Briley extended chokes. If I need the tighter choke first, I use my redneck barrel selector - pull the trigger to get to the tighter choke on the second shot. Amazing how many times that first shot rolls the bird without the second.

I like 1 1/8 oz of #6, handloaded with high antimony STS shot.