Plugging in the numbers of my speed (238 fps), and arrow mass (365 grains) , I get 47 ft lbs of KE. That seems incredibly low to me. I wasnt planning on using mechanicals, but I was planning on using Muzzy 100 grain 4 blade broadheads. However, now I may end up using some cut on contact 2 blades. Im only hunting whitetails in W V, so what are you opinions on this?