kinda hard to label the broadhead as the culprit---deer and turn in a second, depending on range a deer can turn 180 degree,s before an arrow gets there. same with bullet depending on distance ! The only arrow head I actually saw turn wildly was a mechanical a few years ago hitting at an angle and actually cartwheeling saw the slow motion video, I personally have crunched through shoulder and stuck into other shoulder at 30 yards no deflection, now with my xbow I blow the same 4 blade muzzys through both shoulders and stick arrow into ground