Sorry to resurect an old thread but I just ordered a fluted, 26", 3-groove, stainless, 7mm, 1:9 twist, chambered in 7wsm, threaded for savage, and muzzle threaded for brake. These guys are located 15 min from my home, I got to tour their shop and they explained in detail how they make these barrels. They were very hospitable, they went above and beyond, and are altogether great guys. I didn't plan on it when I drove up there, but I couldn't resist ordering a barrel right there on the spot! It's great to have a high-quality barrel maker right in my own backyard. Can't wait to send some rounds down this barrel!
P.S. They can do cut-rifle barrels too.