Hello there,
   I know an old cowboy that uses a old cannon barrel as a post driver, I've been trying to buy it off him for years. He won't budge, the "best dang driver" he ever had. 
  I was over at his house a while back and seen laying there by the front door, I guess someone else has been bugging him about it too. 
  Oh well, I figure I can keep asking.
  Clay