The ASR submissions had to hold something like 1MOA at 100 yards. so if you see guys getting.4 or .3 with AI parts, thats probaby your expectation. If you were using 100% ai parts I personally would expect .3 to .4 and maybe worst case of .4- .6 (2moa).
The wrinkle here is you are using Proof prefits, so I don't know why you would expect that to work?
I mean the barrel's performance at that stage is Proof's problem not AI's problem.
Proof is only going to guarantee it headspaces/meets saami spaec, is safe to shoot, and is accurate (at some level). They aren't going to guarantee their barrel meets additional performance specs, unless that's clearly stated somewhere in writing.
Do you have a different expectation here?