I wanted to pattern my A400 with the Carlson turkey choke using 3 1/2" 2 oz of 5 shot in Kent Diamond and Winchester Long Beard. Patterned at 30 and 40 yards
Kent Diamond
With that gun my best results came from a "Pattern Master Code Black Turkey Choke" "Longbeard 5's & 6's" along with "Heavy 5's".