stick with the sst or try the new boss head flys as good as a field point when i first switched to carbons i tryed the rocket heads every head that i shot verious animals with it took the blades right off the heads. and wasp sent me the jack hammers to try they make big holes on broadside shots the blades stayed intact but on two quarting away shots they sliced the deer 12" long and caught the last rib and went in and then fell out i found the deer but was discourage with them especialy with a draw weight of 78 lbs@ 310 fps i whent to fixed heads the ones with a 1" cutting diameter fly good on today standards,you don't always get the perfect broadside shot.