Why do you need 100 pellets to kill a turkey you would be hard pressed to spread 50 pellets around a 10 inch circle and not have a few find the head and neck
Tack a turkey head target up at 60 yards and see how often you land a pellet in the brain or spinal column with number 5 shot. Pellets in flesh are irrelevant. You need hits in bone to drop him. I think you will find the experience educational.
I have personally seen turkeys look like you hit them with a sledge hammer at 65 yards w #5s
And I think someone needs a laser range finder and a lesson on how to use it. You would be lucky to land a single pellet in a lethal spot with 5's at that range much less hit him with enough pellets for a "Sledgehammer" effect. Either you are overestimating the range of these kills or are just plain full of it. Only you know which.