My hunting partner and I tried them last season and both had very bad experiences wiht them. To keep this short. I had a very nice 8 pt, quartering away shot at less then 15 yards. A shot I have made over and over again. The arrow hit the deer as aimed but seemed to just slide forward on the deer and then bounced off. The deer ran under my stand and stopped about 20 yards away and licked a very superficial wound, then waked off blowwing and snorting. After inspecting the arrow. The broadhead had sheared off at the insert and only about an inch of fat and blood on the shaft. My partner had an almost identical encounter on a doe opening day. Some may use them and like them. I wont use them again.