jimmyp,
The author of that article is one of the three nut cases that took a punt on a 358CRG (35/300RCM). I'm the C in CRG, first rifle was built by the R. When Manson cut the reamer I thought we'd stuffed up but then got our first lot of 300RCM brass and its 0.017" per side in the necks!

The G in CRG is running a 35Sambar (35/300WSM) and speeds (with 200gr) from the 358CRG is right on it's tail. Been a real surprise so far.
Cheers...
Con