this post was submitted on 01 Nov 2024
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I always think its funny how bullets never seem to penetrate anything in movies. Like, guy hiding behind a barrel? Nope, cant penetrate, even with a rifle. The newest Batman movie had me shaking my head as he shrugged off multiple rifle rounds to his armor.
Bullets are insanely dangerous and powerful. A .223 round can penetrate a solid brick wall pretty easily, and can destroy a cinderblock wall with some effort. Even if it doesnt penetrate, the amount of force applied is incredible. Plates designed to stop bullets have to be made in specific ways to make sure a bullet doesn't penetrate, but even with that plate, the sheer force of an impact can break bones.
That last part is bullshit. If the force distributed across the plate were enough to break bones, then firing the rifle would dislocate the shoulder of the shooter.
Just because a plate stopped a bullet, doesn't mean the plate then distributed that force evenly across it's whole surface. The bulge on the back side of an impacted plate doesn't form gently.
To add to your point, trauma pads exist to help mitigate this. Blunt force trauma is no joke.
Backface soft armor also catches spall, which can be very dangerous itself. Even ceramic plates can have a danger of ceramic shards. I believe modern ESAPIs, XSAPIs, and such modern plates are designed stand alone, but original SAPIs carried a warning that their rating was only in conjunction with soft armor.