If you dont account for kinetic energy spread that comes with shockwave, a hole left from 12.7 mm bullet would not do much to internal organs to be honest. Yes it would damage some of them that are in its path, but it would not make your internals another episode of "will it blend". It would make a tear/hole smaller then the bullet size (as human tissue is elastic).
Here’s example with pistols:
Keep in mind here the wave is accounted, and different bullet types are present. If you remove the "boom", youre left with a very very thin hole.
You can see that the pistol bullet has bigger tip (the thing that actually flies and penetrates )
12.7 isn’t really that much bigger (when it comes to tip width). It’s the extra shock-wave produced by much larger propellant explosion (and shaping of the bullet) which is the killer.
So I’d say for a game running on an ancient engine, with current simplification of damage Arma still does a pretty good job.
[quote user_id=“13633351” avatar=“https://assets-cloud.enjin.com/users/13633351/avatar/medium.1434890353.jpeg” name=“Freghar”]For the sake of the argument, I was ignoring the shockwave (as it’s not being simulated) - my point was that even without the shockwave (let’s assume vacuum), the hole would be fatal or severely injuring on most parts of one’s chest cavity, but Arma doesn’t even model that correctly because with increasing speed, it ignores more and more of the damage, so at 50km/s, it’s equivalent to a mosquito bite.
(Yes, I’m ignoring other factors like compression of the bullet, heating, etc., but you get the point.)
Also, it wouldn’t be the only thing missing simulation. :)[/quote]
I am not sure what exactly you mean by vacuum there. It is precisely vacuum that causes the shockwave after the passage of extremely fast objects (object moves away, for a brief period there are tiny vacuum pockets, which cause everything around them to rush in and collide with each, causing the "shockwave").
If however you are saying that from the game’s point of view there is no shockwave and the unit suddenly has a tube-shaped hole with diameter 12.7, in its sternum, then yeah, that would be pretty serious in most cases, but as long as it doesnt hit any bones/vital organs/major blood vessels, the less amount of time it spends in the body (the faster it’s going) the better.
)