Several turkey hunters have reported to me that they have had better results with the 20 gauge Hevi-Shot duck loads than with the Hevi-13 turkey loads.
If you can find them in #6 shot, I'd sure give them a try. They should pattern better and will have more retained energy at 35-40 yards than the lead shells.
If the price is good, you may want to stock up on them. Prices will be going up again soon I understand.
"If he's out of range, it just means that he has another day and so do you."