I don’t believe this cartidge will stand the test of time. While it meets its goal of being stuffed inside the AR platform, it’s not legal for Service Rifle or Palma competition. It could only be used in “Match Rifle” or “F class” matches, but there’s better cartridges out there already for “across the course” or long range competition.

As others have mentioned, there’s a lot of powder being burned in a small bore with each pull of the trigger. For NMC shooting, with the rapid fire strings at 200 and 300 yards, barrel life will be short for anyone that is shooting in the High Master, or even Master classes. Think of a semiauto in 6.5 x 284 - and the 6.5 x 284 is shot slow fire!

For Mid-range shooting with an AR, it might gain some following, but I have a hard time believing it will unseat the 6 BR with the real contenders.