You will struggle to find any ammo in Zimbabwe at all.
If it isn't your primary DGR I would rather the 9.3 but there is no substitute for cubic inch and that makes the 375 more gun !!.

A 320 grain Woodleigh PP in a 9.3 @ 2200 fps will out penetrate a 300 grain Woodleigh PP in a 375 H&H @ 2660 fps. Have proven it many times.