what shells have you tried???

like said Winchester shells are hard to beat!!!

jelly head choke and hevi shot mag blend would prob fix your prob... if you chasing the "10 inch circle" all I can say is get ready to break the bank on loads and chokes... if your looking to kill gobblers inside 40 yards your factory XXfull choke and a box of the new Winchester Longbeard #5's should get the job done!!!