Since the objective is to make these bad boys as accurate/more accurate then the XCR-L, I'd have to guess that it'd be as accurate as... well a long-stroke Garand-style action, with a Garandish bolt, but with no bedding deal to mess with.
I'd gather it'd be as accurate as a bedded Garand?
Will probably be MOA if you're talking chrome barrel. Sub-MOA if you have a nitrided SS match barrel, the new stock, and optics.
A nitride barrel might/will be made, depending on whether or not enough people would buy it.