Thats not showing a barrel obstruction to me. The barrel would be destroyed, not the upper blowing apart. He had detonation prior to the round being chambered fully.
If it was Remington UMC I would have no problem believing an ammo failure. Never use that ammo! I have had 9mm bullets seated too far and .40 that would not cycle due to excessive rim protrusion around the projectile. Their UMC budget ammo just isn't worth it!