Cor-Bon DPX tests.
The following was written by John Farnam on TheHighRoad.com forum after two weekends of testing.
The one round that expanded consistently and completely, despite the leathe r and denim barrier, in all calibers, was Cor-Bon's DPX! DPX, in 40S &W, 45ACP, 357SIG, 38Super, and 45AutoRim, were all unimpressed by the leather and denim. Even 380Auto DPX, out of my little Kel-Tec, was immune. It expande d symmetrically and completely, penetrating nine inches of gelatin, after penetrating the clothing.
I am more persuaded than ever that DPX provides superior performance in the widest spectrum of circumstances, consistently outperforming any other bullet of which I am aware.