I don't get it at all! I am hearing guys lots of guys telling they don't get the penetration they desire after all the chronographing and using KE formulas. Let me put it this way. Back when I shot fingers, using 540 grain hunting arrows at 60 to 64 lbs., shooting 40% and 50% letoff bows, I was blowing through deer just like butter.

As for me, I have seen the light. For hunting, I am going back heavier. Speed and KE is all overblown to a point....you have to have balance between speed and momentum.