Shoot it as is in some kind of stock and if it sucks change the barrel and go to .260 or 7-08 as stated above . Dont skimp on the barrel and it would make a great little hunting or plain fun rifle.
I want to build a 6br, but, alas...it won't feed.
I built a BRX on a Howa action that was originally a 308, it feeds fine. Don't know if or how much the feed lips are different between the 308 and the Creedmoor on the Howas. It seems I cycled some straight BR rounds in that rifle too when I was fireforming. It's been awhile since I played with that rifle though and I'm not at home to verify.
No one can tell me, sure......but i can see what other people suggest which might give me a new idea i want to pursue. Guns are cheap, so building something new is fun. Building something new i wasnt thinking about before can also be funKind of silly, nobody can really tell you what you want. And since you don't know, just put it aside til you've got your head together, then do something with it.