i said it before they will hit where the field tip hits, but they do not fly like field tips. its a fact that they cause more turbulent air then a low profile head. i shot muzzys before and got them to hit where i needed but they do not fly the same where they hit and how they fly are 2 different things. winged heads fly more erratic and are more prone to wind drift. theres not place to hit a deer that a mechanical wont do the same as a fixed. there have been so many test to comfirm this. its just a matter of personal opinon from there. my dad had used fixed heads for 40 years, then for the last ten youd never see anything on the end of his arrow except a good mechanical (he likes spitfires).