I don't understand what you're describing. These injuries were from a popped primer or a live round detonating? The decapping step is after the bullet is pulled and the powder is dumped out. I have set a primer off while decapping and it was just like a cap from a cap gun going off. Where did the fragments come from?I agree that it is unlikely, however, I know someone who popped a primer while trying to decap a live one.
The eye and ear pro didn't do a whole lot for his hand.
The trip to the hospital to remove fragments from his hand wasn't life threatening but still kind of a big deal.