A couple of posts by C.J. Chivers:
Good overall views of the issue, though the increasing use of 77-grain Mk 262 ammunition with the Special Forces and the poor showing in US Army dust chamber tests against a trio of piston guns were not mentioned.
Also, he writes about the M855 not “fragmenting” as well as the M193. Didn’t he probably mean “tumbling”? Though they do sometimes fragment, I thought that was not the design intent.
Anyway, it’s nice to see decent coverage of this issue where it might get a little more visibility.