I talked with nate today and he said he would post the info.
I went out today and done some shooting at 410yds with a wind blowing from 6 to 11mph at 3 O'clock. The 115 Dtac's did well. I don't have it fine tuned but I would definately feel I am on the right track. I shot 10 rounds five with 41.2gr and 5 with 41.4gr and this is what I came up to.
Now I know the weakest link in this setup is the nut behind the trigger.
The only bad thing is once you shoot at this AR400 a few times you can't see where you impact was a couple of rounds ago from the bullet splatter.
this was my first three rounds I sent down and the barrel was clean.