Polar is different even from other Lapua. SK Blue box is the same bullet as the rest of their line up, just the faster velocity range than Red or Yellow.
A LabRadar measured 100 yard session today was 0.153 G1 for me, so for 100 yards and in AB's 0.159 is pretty close, if doing longer distances the stuff in the PDM's is going to be closer to reality.