Text this: Bore-center annular shaped charges with different liner materials penetrating into steel targets

           __   __    ______     ___      _____   
    ___    \ \\/ //  /_   _//   / _ \\   / ____|| 
   /   ||   \ ` //   `-| |,-   | / \ || / //---`' 
  | [] ||    | ||      | ||    | \_/ || \ \\___   
   \__ ||    |_||      |_||     \___//   \_____|| 
    -|_||    `-`'      `-`'     `---`     `----`  
     `-`