Ok.
Better yet though, build a 6.5 GAP 4S (6.5 SAUM) on a short action using this reamer:
https://www.grizzly.com/products/6-...Turn-Neck-2962/T26771?utm_campaign=zPageI'm running 140 ELDM's at 2.820" COAL to kiss the lands. It'll easily beat 6.5-.284 velocities, if a guy wants to go that route, or, it'll match top-end 6.5-.284 speeds at much lower pressure and hence much longer barrel life.
GAP sells headstamped brass:
http://www.gaprecision.net/ga-store/brass.html...... though admittedly, it's Hornady, not Lapua.
Just a thought. I sure like mine.