ORIGINAL: jackflap
Most (not all) of you guys are missing the intent of reducing poundage. Its not for ease of shooting or holding. For crying out loud, with 65-80% let offs, that should not be the issue.
The intent is to keep the arrow in the bird, not necessarily for more damage, but for easier recovery. You are going to have little if any blood trail, but if you have an arrow in the bird flight is limited as well as running through brush.
This is arrogant sounding, but from a guy who has shot lots of turkeys with a bow, when someone tells me they are going to use their whitetail set up on turkeys, what they are telling me is they don't know much about "shooting and recovering turkeys" with a bow.
As mentioned, even at lower poundage, you need to use an adder point or a blunt ended mechanical such as the Gobbler Getter to help slow the arrow down and hopefully keep it in the bird.
Can you successfully kill and recover a turkey with a 70# draw and a fixed broadhead? Certainly, but why not put the odds in your favor by implementing the proper set up that has proven to be most effective over many years.
You shouldn't be so quick too judge what the proper setup is. If yours works for you, that's fine. I know there is a large base out there that believes what you do and that the arrow should remain in the bird. I've arrowed well over 40 turkeys (and turkey hunting with a bow is my passion) to date and I subscribe to just the opposite. I have never had anything but a pass through on turkey, except for one I arrowed through the head with my longbow, and have never lost one yet. A proper shot placement with a head that maximizes shock to the bird is what I found works consistantly for me. Perhaps you did not comprehend what I wrote, but if you re-read it you'll see that I said you should basically need a poundage in which you can control your bow so you can control shot placement for all game you take.
Being able to hold and draw without a lot of movement is critical; especially for those of us who bowhunt turkey without a blind of any kind.
From my perspective, someone who doesn't see the value in this and toutes the only way to put the odds in your favor to consistently take birds is to make sure the arrow stays in the bird, doesn't really know what they are talking about.