I think Bullets/Projectiles do all the work/killing, so good bullets & good stalking/hunting + placement get it done !

These things don't happen all the time for versus reasons .

For the sake of the animals & enjoying your African hunt (less wounding & less lost TF) use a 30/06 with good 180gr slugs to start with, if you shoot your 35 Whelen 338.. 9.3.. well use one of them, again good bullets !

The head PH & I both have our Dachshunds with us on the truck or in the blinds when hunting non DG they help a lot to find animals, then I go get a real tracker if we can't find/track it !

I'm getting better but my eyes just aren't up to it, more so 6-9 hours on a track/animal !