Those responses are correct I suppose but I could not afford to buy a bunch of chokes that cost between 50-100 dollars a piece so I bought a choke that others seem to have had good luck with, a few different turkey loads. Found the one that patterned the best and determined my effective range and went hunting. I shoot a totally different gun than the O.P. so can not suggest a choke or load but this how I determined what to shoot and has worked out pretty well.