I use the Sako Powerhead II (Barnes 110 .277) .270 load for work which provides ammo (they stipulate 'lead free' only ammo...best forget it has a lead styphanate primer in it!)
Anyway, works fine out to around 200m, but after that you'll start seeing anomalies in ballistic performance, both mid flight and terminal. Don't rate the bullet and don't think it's a particularly good load either TBH.
Yes, MV might be around the 3,300 fps mark but with such a light, low BC bullet you'll lose any 'advantage' to a slower 130 grain+ lead bullet once you hit 300m.
Comparing the Hornady Precision Hunter 145 grain load in my own rifle with a shorter barrel vs. the work rifle with the Sako load at 300m on targets, night and day in favor of the former!
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