The Mythbusters apologise for the cannon ball accident.\r<br>\r<br>A new MythBusters Experiment that went horribly wrong as they were testing different projectiles to shoot out of a cannon their control went astray and went .\r<br>\r<br>Subscribe to Discovery! | Find out more about the cannonball misfire from Tory, Kari .\r<br>\r<br>Thanks to ABC for the vid! This vid shows the misfire of the Mythbusters crew, as they do an expermeant with a cannon. This expermient goes wrong when the .
