lilja barreled grendel,

[BjornF16]

I have shot AA 123 scenar, Hornady 123sst , precision firearms 123 sst, precision firearms nosler 120.

Every thing I have fed it has been boringly consistently moa.

I had some Wolf 120 mpt and it actually shot that the best of about .5-.75moa at 100-200 yards.

I have not started reloading for it yet. Like to see a under moa load before I start reloading.

I am considering re-barreling or just dumping the whole rifle and going back to 308.
Any suggestions?

Boringly consistently MOA?...LOL

Small adjustments to the jump to lands with these factory loads would probably bring them sub-MOA.

Going to hand loads will also allow you to tweak the powder for your barrel (barrel harmonics) to bring it sub-MOA as well.

If your barrel is "boringly consistently MOA" with everything you feed it, then you have a good barrel and I wouldn't do anything to it other than adjust its diet.