Higher velocity = killing power, no!, flatter trajectory and farther down range accuracy, YES!!. No matter what the velocity is" within range", shot placement will determine a quick kill, all bullits create hydrostatic shock, all that is, is the term used for the bullit impacting a water formed barrier " animals, people, ballistic gellitan", the amount of hydrostatic shock is baced by bullit shape " hollow point, soft point, full metal jacket".