That's why you cannot correlate penetration data you've obtained from foam to actual results in flesh and bone.
I agree
Is that not EXACTLY why so many people think mechanicals 'outpenetrate' or penetrate just as well as fixed blade heads?
I won't say they out pentrate a fixed. What it comes down to is IMO a deer is fairly easy to penetrate. Out of the correct rig most are waisting more energy in the dirt than they are on the deer.