Exactly. Wound channels and vital organ damage is all well and good, but in order to STOP a threat, ONE SHOT, you have to acheieve a spinal shot or a shot to the snot locker (mid-brain). You HAVE to have pentration. A lot of JHPs expand too rapidly and just dont penetrate enough. I would carry FMJs/TMJs over many of the available JHP rounds. Obviously, the downside to that is OVER pentration, so it is extremely important to find an effective JHP. Anyway, that is my understanding and my belief on the issue. Interesting read non-the-less.Seems what they are implying is, the best round is HP that still provides decent penetration, but FMJ is actually better than HP that doesn't penetrate that well ? (assuming the same caliber).