Eli5: Why are guns with blank cartridges still potentially fatal?

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I am not referring to a scenario where one cartridge has a bullet in it. I have read of a specific case where a blank cartridge was fired and yet the person still died. If no bullet was in the round, how could it kill someone?

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Anonymous 0 Comments

There’s still a REALLY high amount of kinetic energy in the gasses going out of the barrel. Not much range due to the jet dispersing in the comparativelly-low-pressure air around it, but at close range it carries a really considerable amount of force.

Same thing as with RPG launcher backblast from its rocket – there’s nothing going out from behind but the rocket exhaust, but it is still rocket exhaust plume, and it carries equivalent kinetic energy to the one that launches that rocket.

High pressure systems in general can be REALLY deadly, and that blank going off in a barrel is just one example of those.