Interesting project building the pair.

My go to load for my TAC 6 is CFE and 105gr Berger VLD Hunting, dirty but effective. Sweet spot for my 18" barrel is 2670fps. Load is about a grain lower than max but accuracy is quite good and SD is 5-6fps. Typically 0.7 and 0.6 MOA groups at 200.

VLDs aren't my favorite hunting bullets, but it dropped a mule deer in its tracks last fall.

The TAC 6 is a lot of fun at distance with so little recoil. Very similar to 77gr loads in 556, but better ballistics than my 18" Grendel.