I’d say that going from 3 down to 2 MOA is actually very significant; it’s no match grade target rifle, but 2 MOA means that 300yd shots on coyotes is reasonable, and a 3 minute gun it’s really not. So I’d call that a win in my books.
I’m assuming you just used the same barrel as before? I am having some issues with flyers with my ACR. Sometimes it holds a respectable group, but for example, I had some 77gr berger OTMs I shot the other day; of a ten shot group seven of them went into a little over an inch, but 3 of them opened it up to 6+” at 100yds. I’m wondering if that trunnion would maybe be the solution to that issue. I don’t believe it was the ratchet slacking off; it was shot 4,7,9 or something that made such a gross departure from the rest of the group. But maybe it is the ratchet, and at this point I don’t know what to think. Same ammo in my sporter used to shoot about 1” at 100yds with ten rounds; so accurate it was nearly boring. But then, that sporter would do that with most match bullets, so maybe trying to replicate that is going to be impossible. I’d sure like to have a rifle that I could trust on an 8” target at 400yds, but so far I’m starting to loose hope with the ACR.