I'll start by saying I haven't--BUT-at the ATA show this year I saw 'pictures' of guys using the Hyper Shock and from what I've seen they do some 'nasty damage'. Great looking injuries!!!

Tomorrow I'll be trying them for the first time--hopefully on a turkey.
I'm impressed with the theory of the ferrule penetrating before the blades expands, once in the game, the blades expands and the work is done.