I used the Cooper $200 rebarrel. I could never get the first barrel to shot as good as the little card. Second barrel had as good a little card. They butchered the crown on it! How it shot as well as it did ( no where close to the card group) I can not explain. I sent it back. It came back just as bad. Looked like they stuck a reamer in the end of the barrel. Maybe that's how they crown a barrel! A few rounds into the second try I got a live round stuck, it would not chamber nor eject! It went back a third time! The original owners were grumpy and hard to get along with, at least with me! Wilson bought them out. Wilson was their barrel maker. Want a hundred prefinished barrels? Wilson is the place! Lady I spoke with was nice and helpful but it won't go back! I sent it, with a new Bartlien barrel to a local guy!