John,

I would agree with that the examples you mention can be veiwed as "stunt hunts".

But it would also depend on what this is: "a medium sized calibre rifle - same deal, unless you would be willing to do it solo"

If you consider a 375H&H a medium sized rifle (which many here do!), I would say that I would have no problem going to Cameroon alone, and using this for buffalo and elephant. But I would try to avoid taking dodgy chances if possible.