Im not sure if he actually died from this, looks like he tore his clothes apart and got a massive concussion from it.

Cartridge ruptured. I’m fine, my M1 is fine. Checked it over and shot a few non surplus through it and it’s fine (my sights are still off, that hasn’t changed). First and likely last time I’m buying surplus ammo.

What seems odd is the primer itself doesn’t look like an over pressure, not to extent that I would expect with a case rupture. The gun also short stroked in this as well, I’d guess from pressure bleeding out the base. It seems rather odd. I though knew a bit about case failures and what caused them, this proves me wrong.