I was SHOCKED to find that my Russian Sniper 7.62x54R shot the Chinese Surplus from the 880rd boxes within an inch/Sub inch @100m. This same rifle shot Barnaul 2 inch groups and MFS SP about 1.5inches. Haven't opened any Russian to compare yet.
The Chinese and Russian 7.62x39 haven't had a chance to compare those two yet. The rate that stuff appreciates from a few years ago its not worth opening it. Better to just use up or buy non-corrosive, in a few years I can use the corrosive or buy a car, lol (kinda). I think the Chinese may shoot better but on the sale market a box of Russian will likely sell for more down the road, I could be wrong but that's my gamble.