There is always a combination of shell/load and choke that will work best with your gun. I used to use a Browning BPS with a relatively cheap choke for which 80% of the shot pattern was within a 6 inch circle at 30 yards using Federal turkey loads with flight control wads. I didn't appreciate it at the time but I had awesome performance. That gun had a shiny blued barrel and glossy wood and I got tired of wrapping it in camo tape every year. I then bought a Benelli Super Nova with pistol grip for a dedicated turkey gun. 4 chokes (2 really expensive), and countless brands and models of shells later, and I still think my pattern is moderate at best. Keep trying until you find what works best, or at least better, than what you have now.