I'm having a real problem with this article.
I don't doubt the ability of this rifle to deliver rounds on a 1000 yd target.
I have a .223 that is set up with a PRS stock, Horus vision FFP scope with H25 reticle and a JP trigger. It is capable of 1/2 to 3/4 moa accuracy and can consistently get hits at 500 yds on 3 inch steel plates. With that in mind, I have no doubt a M&P 10 can ring steel at 1000. I do have my doubts about doing it with a 168 gr bullet. 168s in .308 go subsonic before 1000 and bullet stability and accuracy start to go to **** much past 750. Something about the shape and center of gravity of the 168 destabilizes it transsonic. Most long range shooters working at 1000 avoid this bullet in favor of a 155 Palma or Scenar. 175 or heavier will also work if the twist will stabilize them. The 1:10 twist in the M&P will handle this nicely.
I believe what you are pointing out here is correct. And quite frankly, dis gun aint built for Dat!
There is certainly truth in that. The design is for combat, not long range precision work.
Can it do it? It seems some have but not everyone has been so lucky. If I remember correctly, you had problems with yours at 100 yards, let alone anything further out. Mine seems fine at 100 but I haven't been able to spend much range time with it and absolutely nothing past 100 yards. So, I have nothing to back it up beyond what it could potentially do and what others like Nutnfancy has put up.
Shooting under 1 MOA is not easy. I am still doing some load development but other projects have jumped in front. The gun does OK running Amax 168 ammo, but not perfect.
The military puts max effective range on .308 at around 600 for the M110. I am not going to argue with their testing as I do not shoot that far.
BTW ck out the new Ruger Precision Rifle!