but to indicate the world rep. on this 270 WIN finnbear Sako I too got one on a deal at least 8 years back and thought would have to rebarrel. Sako and this chamber are widely used here in New Zealand as we have had mainly Japanese red deer population always verging on excess for since well before my father's time -(1920-1930).
So the ugly looking paint job on this example did not put me off. As soon as i got the ballistics i found this well used high pressure barrel was still good enough for range shooting let alone mountain thar in our southern alps. Like the other posters say its a tack driver --and i have only trialled on factory Winchester 130 and Remington core-lokt same weight so far.
One tip from an experienced gun smith helps keep those lands clean --antifoulling barellcleaner(such as your USA Hoppe's no9) on a pullthough cloth can be left over a couple of days with barrel pointing down on a white card --green stain may appear on the card indicating copper foulling coming out.