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I find that highly unlikely.
It would have made an extremely loud supersonic 'crack' or 'snap' as it passed very close to his ear and may have caused some degree of temporary, possibly permanent hearing loss, but uh, no the air pressure differential almost certainly would not cause external bleeding.
You can cause blood vessels to burst if you put part of a human body in a significantly low (negative) pressure situation for a significant duration of time, but a .223 passing by would cause no where near the needed negative pressure, it would be for an astoundingly short period of time and finally such pressure differential situations usually cause internal bleeding which is sometimes visible due to the broken capillaries at the top layer of the skin, but this blood pools within the skin and does not break through its surface.
You would need something to actually contact and break the skin for the blood from those broken capillaries to leak outside of the body.
You'd be surprised, here's an experiment shooting a bullet down the center of a tube made out of aluminum foil:
https://youtu.be/VXIUfMGEXX8
They don't specify the caliber, but they do mention it's going about 1,600fps which is about 1/2 the speed of an AR round.
If that were ear tissue instead of foil, it would get ripped up pretty good.
They say its a slug, meaning its out of a shotgun. They do not mention the gauge, but its safe to say basically any shot gun slug is significantly larger than a .223 round and thus has way, way more air displacement.
Also, they're using aluminum foil, not human flesh or any kind of analog to it. Utterly, completely different and non analogous material, especially to 'demonstrate' what you are claiming it does.
Could a near miss from a .223 or a shotgun slug cause a pressure wave that temporarily makes a bit of your ear wiggle?
Sure, maybe a tiny bit.
Would this cause your ear to start externally bleeding?
No. To verify this, flick your upper ear, such that it moves by a centimeter.
Is your ear now bleeding externally?
Unless you broke the skin with your nail, no, it is not.
My fingertip isn't going 1,600 feet per second or double that. :)
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