These guys offer affordable Stainless Remage options using Wilson blanks. (unaffiliated, just a contented customer)
Now offering Remage prefit variable shoulder barrels that are ready to install. These barrels will come with a castle nut to finish the install. Dimentions - 1.062"x16 You pick contour, twist, chambering, and finish length. Use the notes to seller during check out and include the above options...
raggedholebarrels.net
I've had good results with a few of their .224 blanks chambering my own barrels. I've got a few .5 MOA blanks that get the job done. I shot this last weekend with one of their 1:8 Wilsons just trying to run up the pressure on a new load: