I have been using ABS wrapped, Satern barrels for going on 2 years. I have also used alot of Rock barrels. The Satern barrels are every bit as good, in fact, they are better lapped then the Rock and take alot less barrel break-in. The Satern's use a 5R style rifling, VERY similar to the Rock profile. Satern is using cutters styled after the Obemeyer cutters.
ABS has started using Satern barrels as well as continuing to use Rock barrels, in order to keep up with demand. I only use Rock or Satern in all my custom rifles
, and have no problem getting either to shoot .2-.3" groups in hunting rifles.
I don't think you will be dissappointed, I sure haven't been.
Bettin Custom Guns