Yes, it is interesting that they are using 4064 in their factory loads. Who knows what the real reason or deciding factor might have been? It could have come down to price, availability or something else. Their load data shows 79 gr. of RL15 being the max load at 2430 fps. Interestingly, they show Varget as being the most accurate powder listed. Max load for Varget is 77.5 gr. at 2386 fps. H4895 is right behind Varget at 2376 fps.
I've never fired a factory loaded round from my 416, just handloads. However, I never did try the Nosler Partition in it. I'm definitely interested in hearing how the NPT and SAF compare in your trials.
