I would think that Big Game would be a bit slow for best velocity. I have used this load 93 Grains 2000MR under 350 TSX 2715 FPS with excellent results
I figured it might be a little slow for 350 grainers but figured I'd ask.
Don't have any 2000MR but that looks like a great load. I doubt I can find any whenever I go back to town.
I do have some Varget and R15 so all is not lost but the .416 eats powder fast and I don't have a lot of either.
Thanks for the info guys