Re: N170 in the 264 win mag
This is just my opinion from my experience with VVN170.
VVN165 is in the same burn rate as RL22, VVN170 is much slower than RL25 a huge gap making it closer to 50BMG powder's like VihtaVuori's 20N29. much too slow of a burn rate powder for a 264win mag even with the heaviest bullets,
try some VVN165 or IMR7828.
It takes 43 muscle's to frown and 17 to smile, but only 3 for proper trigger pull.