RE: 338 win mag vs 375 H&H
The .375H&H has certainly got more kick to it, it's not terrible, but it's certainly more than most people give it credit (compared to the other african game cartridges). Like EKM said, get your stock fitted right and that's half the battle, good recoil pads/reducers are a good help too (although reducers usually add more weight than I think they're really worth).