I posted a few days ago . . . I think the point of my question has been missed. It was generally about ballistics. I elected not to go into any specifics because this is a physics forum not the FiringLine forum. So, I will specify and simplify . . . Here is my question. If a sphere is traveling at 1000 fps, according to my data, when it hits a fluid-like medium, (ballistics gel) the shock wave that it imparts on that medium is 1/10 the velocity of the actual projectile. (I acquired this information from a very reputable source.) My question is simply this: what is the force (in pounds per square inch) of a fluid shock wave traveling at 100 fps. Also: for the more advanced math expert (if it is at all possible) I would also like to know how quickly such a shock wave would degrade at about 1' from the center of impact. Can anyone out there help me with this???