speaking from some experience with snuffers, i would not use a wide snuffer with just 40#'s of push.
a slimmer, longer woodsman would be a better choice, or any 3:1 twin blade.
the kill zone on a turk is elusive at best, and there are so many obstacles to consider, from mounds of feather and quill padding to a skeleton netting of bones everywhere - just look at the turk anatomy pics guru has posted.
as with any hunting, accuracy is key, and never more so important as with turks.