There are some guys here who have hunted Africa. Some several times. May I suggest you listen to them. 308 with a 150 TTSX looks like a winner. You can run it faster than the 168 and get great penetration with deadly results.

BE STRONG IN THE LORD, AND IN HIS MIGHTY POWER. ~ Ephesians 6:10

Socialism is a philosophy of failure,
the creed of ignorance,
and the gospel of envy,
its inherent virtue is the equal sharing of misery.
--Winston Churchill