zrexpilot....... here's a little test for you guys that think there is no energy transfer from a bullet. this can be done even with a little .22 long rifle. shoot a empty pop can with the .22. it will make a small hole in and a small hole out. then fill a pop can with water and shoot it. it will blow the back side wide open. why because with the empty can there is room for the bullets energy to expand. with it full of water there is no room for the water to expand from the bullets energy which in turn blows out the weakest area of the can.