Steel is one of my favorite targets. But you do have to use the correct type of armored steel like this Ready Ship Target from Defense Targets. To demonstrate the spalling effect that bullets have on steel we shot it over a pond. Enjoy!
President Donald J. Trump speaks with Secretary of Defense James Mattis and other senior leaders of the armed forces at the Pentagon in Washington, D.C., Jan. 27, 2017. (DOD photo by U.S. Air Force Staff Sgt. Jette Carr)