It would be logical and mathametically accurate to assume that with each setup there would be an optimum in speed and mass that would provide the best performance ie. penetration. However it would vary with each bow setup/arrow type/archer/draw weight/arrow length/arrow weight/ambient environment when shooting and far too much more to think of. To throw yet another factor into the mixture . . . what about the amount of energy it takes to fling the arrow and nock off the string, or another term that may be negligible but always a factor . . . friction.

As someone said earlier, it is mind blowing.[&:]