Mythbusters had to resort to an M134 before they succeeded. Folks of questionable intelligence have posted the stunt to YouTube. Now two chaps in Southwestern Ontario have joined the ranks of those who have exploded a propane tank by simply shooting it.
Of course shooting at a propane tank is frowned on, and even if not successful will earn an Oh-Oh-This-Was-Stupid exclamation. It will also attract the interest of the police, who are continuing their investigation of the incident.
A little more on this extreme silliness is post on Digital Journal.