I've been trying to paper tune my new bow. Bow is a single cam set at 65 lb draw weight, 29" draw, IBO speed is up to 318 fps (I don't actually know what it is shooting). I've been testing many different arrows with length of 28" bare shaft and 29" with nock. I've found an arrow that paper tunes the best with my bow, but it weighs less than all of the other arrows I've been trying. With 100 grain tip, it weighs 360 total(most of the other arrows were closer to 405). I hear you get more speed with the lighter arrow, but you also sacrifice kinetic energy. So my question is, is the 360 grain arrow going to be sufficient enough for penetration, etc. for elk with ranges out to 60 yards?Or would I be better off to sacrificea little on the paper tuning, and go with a heavier arrow? I also hunt with mechanicals if that makes a difference.