Really? Where? Even 9mm FMJ will go clear through the body cavity of an adult male. I have never heard of a 9mm 'bouncing' off skin. It's not the most popular military side arm round in the world because it is ineffective.
Well, I can back that up. Ive too seen 9mm bounce off skin. Just today loading my magazine with 9mm fmj and I dropped one, and low and behold, it bounced off the skin of my foot.