From what I can gather, I believe Zimbabwe would be the only country where a 9.3 is allowed for DG.

I could certainly be wrong on this and would appreciate being corrected if this is the case.

To me, I would feel OK using a 9.3 on elephant so long as you felt comfortable and confident with it. I think bullet selection would be critically important with this caliber - either of the North Fork Solids or GS Custom FP Solids would be my choice.