A friend of mine was recently out shooting with one of his acquaintances and as I was told he heard an unusually loud bang. As you can see in the pictures, it resulted in a catastrophic failure of the guys AR. I don’t have all the details, but I do know he was shooting his reloaded ammo and was using H-335. I also use H-335 and I know that a double charge will more than overflow a case so I am not sure how someone could make that mistake. What could have happened? My theories: 1. Squib followed by a live round 2. Wrong powder i.e. pistol powder was mistakenly used in place of rifle powder Since I don’t know this person directly I don’t have all the facts so I thought I’d draw upon the GT brain trust to see what could have possibly caused this. The last I heard the owner was contacting the manufacture to I guess try to get them to warranty it. Is there any possible way this could have been anything other than my two theories? ETA: There were no serious injuries.