The bottom line on this is common sense. Next time you gut a deer take a look at the rib cage, and the thickness of the ribs. Then ask yourself: How much energy does it really take to punch thru less than a quarter inch of actual bone? Not much.
If ole John were talking to my now deceased for many years Cherokee Grandpa, my Grandpa would think him crazy. Today however, we are the ones that are crazy for listening to such notions. I have heard folks say, that believe themselves experts, that a 3030 is no good in Wyoming or Montana when hunting deer or elk. Really? So before the 3006, and the 300 win mag, and others, no one up there killed deer or elk?
My Grandfather on my other side (a white guy) used to say that Dodges were no good, but I sure saw a bunch of'em on the road, and used to wonder about that as a kid.
As a youngster I too fell for much of the gun rag CRAP, and then noticed at about age 40, that it was just that. CRAP! At age 60, I am now back where I started, am happier, have more money in my pocket, and am not frustrated when I open my gun safe to choose a gun out of the many there. Why? I sold most all of'em, and went back to my roots, and what works. The debate will continue, but I will be like the old man sitting on the porch watching the newest "financed" cars whiz by, and when it cools I'll go and polish my my old paid for Chevy.