Well, I emailed Delta Company last night to see about the waiting list for their .300 blk barrels. I've heard they are really good quality, and you can get a hand lapped barrel for $170 that's supposed to be really accurate. That's dirt cheap, but I've also heard there's a long wait. Like the saying goes, you can have it done quickly, done cheaply, or done right. Pick any 2 of the 3.
For that price I could sell my 6.8 barrel and make the swap for no money out of pocket.