The AXMC308 i purchased back in 2017 was the biggest LEMON I've ever owned. Wouldn't hold 2" @ 100m and after alot of frustrating troubleshooting i discovered a big ding on the crown (hidden by the muzzle brake).
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The Aus AI dealer promised a new replacement barrel and in the meantime had this barrel re-crowned. It still didn't shoot that great after re-crowning, confirmed by the Dealer.
During the 5 month wait for the new UK barrel I discovered the rifle would not extract live rounds. Also one of the 6 locking lugs was wearing (polished like a mirror) whilst the others were still black. Less than 200rnds total fired. Vidoes and pictures forwarded to the Dealer.
The replacement barrel from the UK finally arrived, i unboxed it to discover...
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I informed the Aus Dealer, returned the rifle for a full refund. Shit happens...
To the OP, I'd suggest looking over the rifle very closely. But it could also be your fundamentals as others have suggested.
Now, my current AX338 is the best shooting rifle I've owned and consistently shoots 1/2MOA at 100m. So I'm still an AI fanboy.
Again, shit happens, no company is immune from fuck ups. It's how they deal with it, is what matters.