I have a 310 grain 44 mag load that is running about 1300 fps (1100 ft-lb) at 50 yards. I am interested to see what the bullet expansion looks like at that range. I am thinking that the best option that I have is to stop it with water jugs. Question is, how many inches of water will be required to stop the boolit? Do not want to have to do this more than once since it will be a problem finding jugs for the first try. Anyone have any information that may give me some guidance? Thanks in advance.