.50 BMG Goes Boom

We've all ready stories about Glock, XD, AR-15, and various other gun kabooms. But rarely have I seen one involving a .50 BMG rifle. Well here one is. The rifle doesn't look to banged up but by God the aftermath looked pretty bad.

It sounds like the shooter used a hammer to close his bolt. Pro tip, if the bolt isn't closing properly that's the rifle's way of telling you there is something wrong.