Federal Hydrashok is not a bad round...but as mentioned earlier, it is an under-performer. The HST is the result of Hydrashok technology moving on. When shot through heavy clothing (winter coats), Hydrashok nose cones tend to plug up and not expand as it should. In the course of developing the HST, Federal removed the cone in the hollowpoint and cut expansion grooves which provides reliable expansion through all barriers in the FBI protocol. Federal basically re-invented Speer's Gold Dot.