If you haven't seen it already, there is a reloading manual for the 6.5 Grendel with lots of information, including why the SAAMI chamber is the way it is:
6.5 Grendel Reloading Handbook.
We should also see an announcement of a second volume dedicated to hunting with the Grendel. This is a far more extensive manual with discussions of why the 6.5 caliber is almost unique (history plays a role!), sights useful for the Grendel, why shorter barrels are useful (lot's folks use 16" and 18" barreled Grendels), gel tests to verify performance of selected hunting bullets, recommended bullets for various types of game, an excellent summary of reloading tips for the AR, and, of course, a whole pile of reloading data.
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