An average sized guy is like 10" deep in the thorax.
I don't believe there are any that "could" not.
I do believe, based on objective evidence in gel tests as well as by the complete and total lack of evidence of it ever happening, that it is not a factor upon which to decide as it is too extraordinarily unlikely.
If you feel M193 and any of the rounds here being discussed are significantly different, please explain why you think that.
And remember
I've shot a lot of 55 gr FMJBT w/Cannalure over the years in jugs an gel and stuff. It's frag characteristics are not the most reliable when you get into shorter barrels.
I'd shoot it if I had to, but 75-77s are much more consistent at breaking apart. Why settle on pretty good when you can easily get REALLY good?
I would also add that bullets that do well against auto glass do well through heavy bone.
Here are two terms to learn about the problems with FMJ and inconsistent performance:
Fleet yaw
Angle of attack or AOA
https://www.m4carbine.net/showthread...3144-Fleet-yaw
Interesting old thread.
I've continued on the path of 70gr TSX. Everything I have ever shot with it has evidenced exceptional trauma.