Yes I agree. When looking for examples of big bore double rifles photos to display on NitroExpress.com it is very common to find modern DRs chambered in .375 H&H Magnum.

But maybe some could answer or confirm what has been said above in the thread. It is not the fact the case is belted that is the problem with "off-face", but some believe a belted case can be a problem for extraction vs a rimmed case. Rather it is overloading or using full power loads or factory ammunition that is the potential issue.