The Oregon barrels are made with the tooling from the old Montana, and Orion, barrel manufacturers, and are of equal quality to those offerings. I have three barrels I'm currently using, two Montanas, and one Orion, all are good shooters. Oregon is owned and run from The Gun Works, which is owned and run by Joe Williams and his wife Suzy. They are good people to do business with.
Those massive 4 bores used to show up periodically at the north coast Rendezvous, and got a lot of attention. But one thing they all had in common was they had more previous owners than they had shots out of the barrel. The problem with Oregon barrels for me is they are only offered in shorter lengths, unlike Montana, and Orion's former offerings.
Hungry Horse