Was looking to set up a shooting area and will probably keep it to pistol calibers for starting out. Have not set anything up yet, but have a few areas with natural hills as back drops, but they are full of rocks. Possible distances are up to 3 or 4 hundred yards, and also some closer where maybe 100 or 200 feet from a hill/bank. Thinking of backstop construction and then having the natural hill behind the backstop, but that isn't what this post is about. Question is, what types of ammo or bullets will just fragment and deform vs. possibly bounce back? I tried to look up some info and immediately became confused - some discussions were higher velocity would fragment better and bounce back less off steel targets or if they did catch a rock or deflect. So, any one with real world experience, curious what your observations are on this topic. Hollow points, wad cutters, plated, jacketed - so many options but just for hitting targets, is one better than the others for safety? high velocity vs. low?