As a domestic UK hand loader, I'm now looking at a powder for the imminent purchase of a .375 H&H Magnum for the 'trip of a lifetime' to Big Game hunt. Aware of climatic, including temperature, variations between the UK and the African plains, and the effect on chamber pressures this has, does anyone have any guidance on a climate tolerant powder that is up to the mark and gives minimum pressure variations 1/ between those locales and 2/ between day vs. evening in Africa?
I'm expecting to use a 300 gr head but haven't decide which profile yet (comments invited), though I am growing to like Nosler's range. Is this enough head weight, if not going for buff and if not, what weight would I need to go up to?
I have QuickLOAD but there is nothing to substitute for the experience in the field.
Thanks in advance.