Just a quick point of order:
In most African nations your PH is not allowed to have ammo for you as they can only have ammo for their guns. Supplies can be rare in areas like Zim.
You can bring 100 pieces for each gun max. Your total must weigh less than 5KG.
If you get your ammo lossed or seized, your best hopes of finding ammo in Africa are:
7x57
.270 win
.30-06
.375 H&H
.300 win mag
Deviate from those calibers at your own peril should your ammo not make it to camp.
