While I like both the 131 Hunter and VVN-160, the combination might be just a pinch too fast for this cartridge. I prefer a full or nearly full case of the powder I test, for consistency alone if nothing else. VVN-160 didn't get me up to the nearly full point although performance was fine, a little slower than other powders I tried but it is a cooler burning powder by comparison.
The best performance from my notes indicate VVN-555 and Re-26 as the best in my rifles. Nearly full or full case higher velocities with fine accuracy.