IEI - your setupmay or may not out-penetrate my bow (you have me by 4# KE). But does it really matter? We're both probably way overbowed for whitetails anyway. So it's a zero-sum game. For what it's worth, You might be surprised by the results of our "friendly game." I know I was. I had NO intent on hunting with this setup when I started experimenting with it. But I had enough confidence in it to lug it out there and my first shot at a deer was at 37 yards.

Honestly, it doesn't take much to punch through a ribcage. Hell, I shot 2 pretty nice bucks this year - passed through both.

Just like KE can be a crutch for bad shooting - speed can be a crutch for misjudged yardage.