What's wrong with belted cartridges? I keep hearing people bring this crap up, but nobody ever has any proof as to how the belt causes issues, other than a bunch of BS from some BS gun mag article full of pseudoscientific views, from many years ago in an attempt to try to push non-belted cartrdige designs.
If I were building a rifle, and since I loaded all my own ammo, there's no way in hell I'd pick the 6.5 PRC. There's much better out there, like the 6.5 SS. And now that ADG is making proper head stamped 6.5 SAUM brass and 6.5 SS brass, there is no point in building a 6.5 PRC over a 6.5 SAUM or 6.5 SS.
Now, if you just want to buy a rifle and buy factory ammo (just like the Creedmoor)...Then I can see it having some relevance. Other than that, it really has nothing other cartridges already offer, and do a better job at.