I shot some of it. It was very accurate given the weapon used, and it performed just as you'd expect. The core tracked true, and the bullet appeared to hold up pretty well to various barriers. I shot it through a 50cal ammo box, through a 1" board, and in all cases it appeared to maintain its integrity more or less. On water jugs, it performed as advertised, as well, with the petals shearing cleanly and the core tracking straight. The core penetrated 4 full milk jugs of water, while the fragments (4 of which I recovered) , penetrated into and stopped within the 2nd jug. The dispersion witnessed on the entry of the 2nd jug was between 2 and 3" diameter. This falls within the diameter TSC of the round in tissue, and should significantly add to damage from/within the TSC.
The fragmentation was not as extreme as MK318, but I am of the OPINION that it will be more reliable and predictable.
I achieved right at 2moa accuracy seated off a bag for 7 quickly fired rounds at 100 yards using a LW profile 16.1" BA Hanson barreled rifle topped with a Strike Eagle 1-6 in 5-15mph gusting wind with a cut open hand (that ammo box...), a mil-spec trigger, and no real stress over the group. If someone like Molon got ahold of it and turned 0.8-1.2moa out of a heavier gun with better prep, I would think that to be par for the course and not at all surprised.
I am very likely to make this my "deer round to evaluate" this year.
So far I and my friends have tested, on deer:
75gr Gold Dot (Bled a LOT! We were impressed)
70gr GMX (Variable performance, one round was text-book amazing, blew a nice hole through the deer, lots of blood, another round failed to expand and tumbled)
70gr TSX (Performed well. Not amazing. Just well. It expanded, fully penetrated, and there was a normal amount of blood, etc.)
64gr RA556B (Bigger entry than exit, damaged vitals notably, seemed to dump decent energy rapidly. Not much/any blood trail)
This year I am torn on M855A1, or this round. I will likely use this round because the accuracy M855A1 has provided me (3.55moa out of a proven 1.2moa setup) has been uninspiring for longer shots (at 200 yards that's 7", and some groups were notably worse, so it could be as bad as 5" off center, even if I did my part perfectly, and that's a no-go for me on game). It will likely be this round that I test for deer season.