Thanks. What had really set me thinking was the insistence from, the Outfitter that I should not bring a 375 H & H. It just set me thinking about whether I actually needed it.As a fellow Brit I feel your pain!! If it is any consolation I am heading to South Africa before long and am taking my .375 H&H as a plains game rifle with the 250g TTSX that you mention, my loads give a velocity of 2860fps which should be fairly flat shooting and effective. If you are going to only be shooting plains game I would have thought the .300 Win Mag would be more useful as it could be used for stalking in the UK as well. The .338 is a good round but it’s quite similar to the .375 and 9.3.
Personally, my thought is if you have a .375 you already have one of the most versatile rifles that you can literally use the hunt everything with from Duiker to bull Elephant. What are you hoping to gain?
My local force will not condition 300 Win Mag for UK use. I have tried that already!