.50 Cal Vulcan Rifle Backfires

Medic!!!!

So you have your new shiny .50 Cal Sniper Rifle just begging to be tested.  You head out to your local firing range and chambered in the stock .50 Cal bullet.  You're thinking, this would be the first bullet to be fired from this gun.  Momentous you say.  Slow controlled breaths.  Squeeze don't pull.  

Boom!  All hell break loose. 

From what I read, the bolt exploded backwards and lodged into the guy's neck.  Lucky for him, it didn't puncture his jugular.

Guy holding the camera could sure use some lessons in taking videos.