I agree with you AZDAVE.My favourite rifle is my 9.3x74 Chapuis RGEX, fits me perfect and is a joy to shoot. My eland and sable fell to my 9.3 double. If it is what I had in my hand on a plains game safari and africa provided a target of opportunity buffalo I wouldn't hesitate to use it. Would also use it on the cats. It is at the very bottom end of the DG spectrum (Mine load that gives the best 4 shot soft/solid combo is a 300gr A-frame and 286gr Swift break away solid at 2385fps)
The most important thing with the light end of the DG rifles is the shot placement. THAT FIRST SHOT HAS TO BE in the vitals. or your day and the PH/Trackers is about to be ugly.
If you are going to hunt DG with the light double (9.3 and 375) you must be a very competent rifleman/riflewoman that is very calm under pressure and also have your PH's concurrence on your rifle choice so they the PH is prepared in case you screw up the first shot.
If it was a Buffalo or bigger specfic DG hunt I would bring a bigger double 450/400 or bigger.