Is this argument still going on??? If you are still under the impression that a 30 BR, 30PPC, or 30GR will not shoot as well as a 6PPC, then you need to build one and see for yourself, like many of us have.
I pulled out my HV 30BR at the 100 HV at the Crawfish, and took 2d, got beat by Gene Bukys.
With more good shooters trying 30's in Score, you will be hard pressed to stay on top in that game with a 6mm.
In my opinion, if the NBRSA does vote Varmint for Score in permanent next year, you will see more and more shooters switching to the 30 for both score, and group.
I am agonizing over that very thing myself right now............jackie