Good brass is a foundation, saves you money and frustration....start at the start. Don't get douped into schitt for brass anything that is the latest and greatest..
I expect Lapua will provide 6 ARC brass once 6 ARC demand exceeds 6.5 Grendel demand. That should happen pretty quickly.
In the meantime, there's Hornady brass, or resized 6.5 Grendel.
(I know you weren't necessarily talking about the 6 ARC, but it's definitely in the "latest and greatest" category, even though it's really a well known quantity.)
