I' m trying to figure out what my KE is, but I don' t have the resources to figure it out myself. Here is my setup. PSE Viking...shooting about 289 fps....arrows are Beman ICS Hunter 400' s at 26 1/2 inches(from insert to the end of the knock)...broadheads are Rocket Sidewinders at 100 grains. I know the setup is good enough for whitetails as I have shot many with it, but how would that setup fair with a shoulder shot. I have been reading many posts recently about penetration with shoulder shots and was wondering how my setup would work if I messed up on a little forward shot. Thanks for the info.