Just send the rifle in.
Scenario #1) They get the rifle, something is wrong with it, they fix it, they own up to it, you get the rifle back and you have the package you were after when you ordered the rifle.
Scenario #2) They get the rifle, something is wrong with it, they fix it, they keep it a secret and you get stuck paying $200 (plus shipping)... but you end up with the package you were after when you ordered the rifle. Plus the gained understanding to never do business with that company again.
Scenario #3) They get the rifle, there is nothing wrong with it, they send back proof that you can't shoot. You owe $200 (plus shipping) and you still end up with the package you were after when you ordered the rifle.
It's $200 (plus shipping maybe) and you said you're up against an approaching deer season. What is your time worth? I don't have lots of money but I certainly wouldn't have done so much hand wringing over three boxes of match ammo worth of money.
Send the rifle back. Have them get it shooting one way or another.
However. If that rifle comes back and you owe $200, regardless of how you came to owe $200 to get a new rifle shooting the way it is advertised to... there is zero chance that company ever gets another dollar from me.
If you've bought "hundreds of rifles" then just dig out another one for your upcoming deer hunt.