personally I don't think the advantage of Hevy-Shot is worth the cost. I have never had a problem killing turkeys with any of the big 3, Winchester, Remington or Federal, copper plated buffered loads. They are all good and are all more than adequate to kill turkeys. I have always leaned a little towards Federal Premium 3" #4s, but have used all three brands in #4, and #5, all were good.
Hope this helps;
Tony212