Ed T... "Second was throwing live 22 calibre shells in an open camp fire, and running behind trees before they shot off."

They don't do that. The leads melts and the powder explodes. You could get some hot lead or ashes on you, but not a bullet. Even if it did do that, it wouldn't even leave a bruise. Worst case would be the brass being propelled backwards from the powder being set off.

Now, an unopened can of beans is nasty. When that goes, there is real danger for anyone close to the fire.