My Savage is pretty rough so I would guess copper fouling for sure. The up side is that shooting it will smooth it out. Break it in will help. Mudrunner's idea of a professional lapping is spot on. A good smith will not harm the barrel and I've seen some dogs tighten up a lot. Numrich carries rejects not surplus. Savage doesn't dump good barrels onto the surplus market. That one didn't pass the muster for some reason. But it shoots pretty good by the looks of it.
proper barrel break in
This thread is a good start on breaking the barrel in.
Some barrels only shoot well when they are clean. Some need to be fouled a bit. Only women are more perplexing than barrels.
You live a hop, skip and a jump from me (Federal Way). We should have coffee.