Viggo Mortensen and his shotgun in 'Appaloosa'

• Story Highlights
• Viggo Mortensen follows classic cowboy code in the Western "Appaloosa"
  
• Movie reteams Mortensen with "A History of Violence" co-star Ed Harris
  
• Co-star Renee Zellweger says Mortensen and his shotgun became inseparable
  
• Mortensen took on smaller projects after "The Lord of the Rings" trilogy
  
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