Here's some numbers that may be of interest. Under bow1 and bow2 the orangish colored cells are results the white cells are input. bow 2 only allows you to change mass, peak weight draw and brace. I only changed from a 530 grain arrow to a 330. You can see that KE dropped by 5 ft/lbs but velocity increased by 46.3 ft/sec. In this scenario even the lighter arrow launches with 52 ft/lbs which is more than enough for whitetails. Of course arrow choice is a subjective thing but in this case anyway I would go with the 330 grain arrow.