Thread: New Tikka .308 zeroing issues

I would not touch or file down the barrel channel on a brand new rifle. Its still under warranty.

Check all the logical things first.
Recoil lug,
Scope rings,
Scope?

If none of those take it back to the store you brought it. Check the requirements for the 3 shot MOA guarantee. It might be with Sako or some other specified ammo.
But even with less accurate ammo it should still group okay.