I have one of the X Bolt Hells Canyon Speed rifles in 6.5 Creedmoor. I just got it and have not shot it to comment on accuracy. I am mounting the scope this weekend and hope to report back soon. Co workers who have purchased the same rifle in different calibers have seen very good results. All 1" or less at 100 yards.
It is a nicely balanced rifle and comes with pretty much every feature you would want. I am not a huge fan of DBM's, but Browning's is about the nicest out there. It *feels* slightly heavier than the 6lb 5oz weight but it is not bad.
Not sure on the threads, but just in eyeballing I believe the brake set up is the same one that the Long Range model uses at 5/8" x 24
X Bolt Long Range