1. 
   bar shot
   (from the article `military technology`) ...into the gun but designed to separate upon leaving the muzzle. Because they dispersed widely upon leaving the gun, the projectiles were especially ...
   Found op http://www.britannica.com/eb/a-z/b/19
   
   
2. 
   Bar-shot
   A tin container, designed to split apart when fired from a cannon, filled with an iron bar packed in with musket balls.
   Found op http://www.napoleonguide.com/glossary.htm
   
   

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