I have a 1100 LT20 magnum with a 21" barrel set up for my wife to use... The gun has not been used to shoot turkeys for a while...the last time i patterned it, it shot the Remington Hevi-shot #6's pretty good... I recently had the forcing cone cut, and polished... I polished the barrel myself.... I have a Remington SF choke for it.. .570 I think... I also have a Tru-Glo gobble stopper for it and i think it measures .565... I have a couple of NITRO 4,5,7 loads for it and I have a box of hevi-13 #6.... Which choke would you guys reccomend for this set up? Any input would be greatly appreciated..