I have not heard of any problems. I will check with a buddy. He shot hevi shot all last fall for ducks. I do not believe he has noticed any problems. I found it to pattern great through the full choke I got with my Benelli. They are making chokes now just for hevi shot. I would try it with your regular full choke to start. Another thought is that with turkey hunting you probably will not run enough hevi shot through your barrel to make any major impact. Unless you have the opportunity to shoot ALOT more turkeys than I do.