Another $.02. My favorite and what I have used for decades is the 12 ga. , full choke, with high velocity #5 or #6 shot. I used a 1960's vintage Savage 12 ga., SBS FF , 30" F/F from about 1968 until about 2000. It was stolen. I went "fancy" and bought a so called "turkey gun". Mine is a fully cammo, Benelli Nova, 12 ga. with a True Gold brand, ported, .670 choke tube. Mine gives a great pattern with 3" Wichester Supreme, copper coated lead, #6. I tried many of the 3 1/2" loads and found no real advantage as far as pattern density at 40 yards. I have killed every gobbler that I have shot at with this set up. I estimate that the longest shot was abut 45 yards. Most were will inside 30.