I had a chance to drive out to the country to visit my dad a put a few rounds through the rifles today. I bought 2 cases of ADI when they were on sale and after shooting 20 or so today, I wish I had bought 2 more cases.
While I wasn't shooting for precision since I was trying to sight in my new Holosun red dot I picked up from PSA, I would say this ammo shoots as good as any other commercial ammo I've fired. In my amateur hands it's a 1.5 MOA round. I'm sure an experienced shooter with a steadier hand and something better than a mil-spec trigger could do much better.
One thing I noticed is these are LONG, almost touching the inside of the magazine but I had no failures to feed or eject in either rifle with the limited shooting I did. Below is a chart of the chrono data I capture for each barrel.Max Length!Data: