shot at a deer extreme quarter away,as soon as I released deer turned straight away arrow went right up the poop shoot,45 yards with a 70 pound compound,325 grain arrow 2 blade rage,deer ran 70 yard death run and fell over,under 15 sec. death,did not pass all the way thru but large blood trail,lots of arteries in the rear end of deer,not something I would do on purpose but very quick kill,frontal shot saw elk taken with longbow at 10 yards arrow went right to feathers,elk down very fast,will they work yes but small target and large margin for error.