First of all, define what your intentions are with the rifle, as that defines the contour and length.
Second, there are numerous high quality barrel manufacturers in the US, bartlein is definitely good to go.
What you are looking at is a barrel blank, it is turned to the finished diameter, the bore is finished, but the barrel is not chambered. It can be put on ANY rifle by a competent gunsmith, as the gunsmith will be threading the barrel for whatever action.
are you handy with tools? If so, you can go with a pre-chambered barrel nut and install it yourself, though it requires some special tools. barrel vise, action wrench, go gauge and a decent torque is recommended, though not absolutely required.
What action do you currently have? It may or may not be worth the investment in a good barrel.
What kind of stock is the current rifle in?
For the price of a bartlein barrel and having it threaded, chambered and installed (the smith will want to true the action, an added expense), you could buy a Howa Chassis Rifle in 6.5 and call it good.