like the others said if your bow is tuned they should shoot the same. whatI learned from using them is if you hit bone your done, if you dont it is deadly, andleaves a real nice blood trail too. to meI didnt like the penetration from them,I perfer the muzzy 3 blade 100 grain fixed head, but they also can lose penetration espeacially if u hit that shoulder. get your bow tuned,and practice!you shouldnt have any problems.