I have a Mossberg Model 930 Camo Turkey Model. Great Gun! The best turkey load I have found is the Remington Nitro Turkey 12 Ga. 3" 1210 FPS. 4 Shot!
I was amazed how tight a pattern it holds at 40 yards which is what I did all my testing out. The pattern was next to unbelievable! You might want to try them. They come in a 10 Round Box! Also would be excellent for heavy cover coyote hunting !!!
Good luck this season to all you fellow Turkey Hunters! And long live the NWTF!