The 12 is plenty of gun but I did switch to a 3.5" gun this year. I didn't have any problems killing turkeys with the 3" gun and I am sure I could still kill turkeys with a 20 ga. but it sure is nice to have a gun and a shell and choke combo that if one hangs up about 60 yards that you can still kill him grave yard dead. From the testing I have done since turkey season ended with the mossberg 3.5" and the rhino choke with the Hevi-shot 4x5x7's, I wouldn't hesitate for a moment to take a 60 yards shot.