3 days ago i went for a drive and all i was seeing is grouse and i decided to take a shot at one with one of my practise arrows.so i shot and killed it instantly so i thought i would do it more often since it seemed easy so the next day i seen another one and i shot it except this time it flew but i know i hit it. well i was pondering on what happened about 40 yards in the timber i could hear it on the ground and i went over there and it was dead.today same thing happened when i shot it flew away so i went were it was and there was feathers on the ground but i could not find it. is there a special grouse tip out there that i can buy to help kill them instintly and stop the arrow from passingthrew?