I am shooting a 60 lb. bow.I shoot a montec and my arrow passes through deer and sticks itself 12 inches in the ground. 60 lbs. is plenty. Don't get caught up in all the talk of K.E. and arrow speed. If you shoot a good broadhead and can put the arrow in the right spot, you will be fine. All Ted Nugent shoots is 50 lbs. and he gets a pass thru almost every time.