I shoot a SBE 12 ga and a M2 20 ga for turkey hunting. For the 12 ga , I get good patterns shoot 685 with good old federal #5 's Pretty much anything shoots well. I dont really like super tight patterns and I dont really care for the flite control. for some reason, the flite control seems erratic for me. tight centers , but the entire pattern seems to drift from shot to shot.
For my 20 gauge, I do shoot the flite control, #7s HW and I get very good results with factory full choke.
I have tried lots and lots of combinations of loads and chokes for both guns.