on my T3 Tikka and then shooting 5 three shot groups with different bullets, the barrel cleaned very well with about 5 patches of wipe out, waiting 5 minutes between patches. The nicest factory rifle barreled rifle I own is an old 54J Schultz and Larsen in 7x61 S&H. Second place goes to a Mannlicher Schoenauer. Those barrels clean up like the best benchrest quality barrel I've ever owned. It's all about the effort put into the barrel production and methods. There is no reason, other than cost, why a 26" medium weight hunting rifle barrel can't shoot as clean(lack of copper fouling) as the best benchrest rifle barrel, if the manufacturing methods that almost always guarantee that kind of performance are adhered to.