I have a Patriot in 6.5 Creedmoor with the Cerakoted barreled action. I've only shot factory ammo in it, no bedding or tuning, just straight out of the box, and it has shot around 1.5 MOA with less than 60 rounds fired. My rifle wasn't used in wet weather, so I don't know how well the finish will hold up, but it you take reasonable care of it, I would expect it to hold up better than uncoated blued steel, but probably not as well as stainless.
I also have a Savage Axis in 6.5 Creedmoor and the Mossberg is, IMO, a much better and more substantial feeling rifle.
