I picked up a 22" stainless barrel from X-Caliber in their H-Bar configuration. It's turned out to be a good shooter. http://www.x-caliber.net/ar-barrels The website has a "Configure your custom barrel". The machining and finish are beautiful. If I remember right, with the options I selected, it was $320. Delivery was about three weeks. It was a little undergassed, so I ended up opening the gas port a bit to .076. I asked them what the port was and initially told that the port size was proprietary. After I replied with a little astonishment "it's a hole", he said that if I were to consider it about .070, I'd be real close. It could probably use to be opened up just a tad more. I'm using a POF adjustable gas block opened to 9 of the ten settings, but it's running great. She feeds the 140 ELD's with no problem.
I have a ballistic advantage 22" 6.5CM barrel. I love it so far... although, I've only shot about 100 rounds thru it so far.
I've been having a lot of fun experimenting with different pills and powders. In fact, I've never even purchased a factory round yet, although I'm sitting on about 250 rounds.
The65Creedmoor forum is great for detailed info.