Here are some pictures of my own testing.
First is the test I did a few days ago,Heavy Clothing which consisted of a heavy tshirt with a heavy sherpa lined flannel shirt,covering cardboard half gallon milk jugs at 21 feet. Yes,I realize 10 ft is the FBI standard but I wanted to simulate a standardized "combat" distance.
Right is the 124 gr +p HST,Left is the 147 gr HST.Both of them penetrated 5 milk cartons and were stopped in the 6th.