You can always try cleaning in it up by fire lapping it. It will help smooth the high areas and help with the copper fouling if that's a problem. It's helped one of my barrels before that developed some pitting.
You have nothing to lose and it's way cheaper than a barrel replacement.
Wheeler Bore Lapping Kit
An affordable means to polish a rifle bore to remove factory machining marks, produce less fouling and enhance accuracy. Traditional hand-lapping is...
www.midwayusa.com
FF Kit 270 Cal
FinalFinish and FinalFinish TMS bullet kits and loaded ammo correct and improve reamer marks, dimensional uniformity, tool marks and surface finish issues in your barrel providing enhanced accuracy of your .270 cal rifle.
www.davidtubb.com
You have nothing to lose and it's way cheaper than a barrel replacement.