You've got dead turkeys there but I think with a 3.5in shell you should do better than that. If you handed me that gun with that choke I'd have to try a 3.5 federal hw 7 just to see... hevi shot 7s should give a big number. You have a very popular choke, but for $20 you could try a tightwad or an undertaker. if you wanna stick with longbeards you might try a 3 in shell. The sm I used to have shot 3" shells much better than 3.5. Could just be you need to deep clean your barrel, it can be amazing how much better your gun will shoot by doing that.