I have a 277 AM, but can't seem to get my hands on any heavy-for-caliber, high BC bullets. Next barrel will be in a more common caliber with readily-available lr bullets, such as .308 or .338. Since my bolt face is already opened up for the 338 LM, I will probably stay with the 338 LM brass for the next caliber as well. At this point, I'm not looking so much for advice on caliber, as I am on what barrel to order. Current set up is Rem 700 action, McMillan A-5, Nightforce NXS 5.5-22. Looking for barrel recommendations on: Length (28-30") ? Twist (probaly shooting 250 gr. NAB) ? Contour (just heavy enough for good lr accuracy - this is a hunting rig) ? Fluting ? Brand/maker ? SS or CM ? anything else you consider important ? Thanks in advance guys.