Shhhh! That's science instead of internet.
That may have been what the men's gun rags stated at the time, but that's not how the eventual M16A2 platform worked out. The 1:7" NATO twist is far from 'barely adequate', and is fully 100% tighter than the original XM16E1s shipped.
NO elongated bullet going through ballistic transition into as dense a medium as a human torso will remain dynamically stable through that transition. Catastrophic yaw results from over-turning moment of intertia being drastically increased on the meplat. No amount of rigidity of the rotational axis is enough to prevent this, and the ass end tries to become the front.
Solid bullets can handle it, and some heavier jackets can,..."match" bullets, by their very nature for consistency in target shooting, have thin jackets. Going into yaw, the jacket on the 77 MatchKing's long axis ('cannelured' or not) does NOT have the strength to tolerate the force imparted, and it shreds. Berger's are worse.
The lethality has ZERO percent to do with any "hollowpoint", which is why it is not applicable to Hague, or any other convention, and is in common use in combat. Same for the 175 SMK and 190 SMK in common use in the .308 and .300 WM rifles. That they shred pretty badly is not worse than some Hague-constrained 7.62x39 open-base ammunition whose bullet yaws in the same fashion, and whose jacket holds 'integrity', but crushes like a pop can and sprays lead out the bottom...
...but as avboiler questions, I ask "Why not have both?!"
65 GameKing @ 3,000.
-Nate
Gun rags?
One in seven came along later. The evolution of the changes wrought is an interesting subject.