Those numbers look at best to be a tad generous for the 8x57 with 200 grain bullets.
From Hdgdon's data. 200gr loads
200 GR. SPR SP Hodgdon H4350 .323" 2.970"
49.0 2276 35,900 CUP 54.0C 2522fps 44,800 CUP
200 GR. SPR SP Hodgdon H4895 .323" 2.970"
38.0 2240 36,800...