This gallery is just amazing. It shows in hughe way how the energy caused by the impact of a bullet propagates in an abject and causes parts of it to fly away in all directions. The fourth picture shows how the energy of impact is transmited to the rear and at same moment a dustcloud similar to the imact point is generated. If some day you have time, make this experiment with a block of gelly. It will show how the energy of a bullet expands in soft tissue similar to human body and you will be surprised and ask how some humans can survive to that.