I carry/shoot their .38 +P FBI load in my Model 38 & 638 Bodyguards (older versions). Shooting them from such a small platform is stout, but controlable. If what they publish is true (no reason to doubt them) they are getting 1000 + fps from short barrel Js. During my LE career I had to use deadly force and the FBI load did the job (I'm still around and a grandpa and "they" are not).