The 2 best choices are to look under savage barrels at Midway and Brownells.
Also give Jim at NSS a call (phone number is listed on the web site) http://northlandshooterssupply.com/
I know that Shilen has had production issues with 6.5mm barrels this year. I have been waiting since before spring for my 6.5x284. Last year getting one would not have been an issue, usually not more than a 6 week wait. But as we know, lead times for anything decent in 2013 have been setting new records.