Got my Ataman m2r today

I got my new rifle today the Ataman m2r. .357 olive. It my first high end pcp and man is it nice! I order it from PA with the 10 for 10 service. The shot string was 888 891 888 890 888 888 881 878 864 849 on a 230 bar fill or so they say. Well i filled it to 230 bar and i got 754 i accidentally deleted the shot string but it was about the same upper 700s till 190 bar then its full power till 155 bar 880 fps. I went through a tin of pellets with the same results. Im using the jsb 81 grain same as they said they used. Are they full of it or did the regulator brake in shipping? If someone with an Ataman could give some insight that would be great. 
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