has anyone seen the f-15 broadhead made by carbon express? a freind of mine is using them out antelope hunting, one mean looking broadhead 6 cutting edges i couldnt see and animal going 10 feet after putting one of those threw it. he is shooting the expandables but he says there are fixed blade too. im not to shure how strait they fly due to all the serface area but he said they fly great. anyone else see these or shot them??