I reload 300 H&H, if that is what you are asking. It's in a Remington 721, though.
I think the 300 H&H is superior to the win mag, imo. It is within a hundred fps of all loads and is equal to in some weights with much less powder.
What are you wanting to do with it? You can push a 180 gr bullet 3000 fps with no problem, or you can push a lighter bullet real fast.