Your question regarding Elk is what got me onto Eland, but your comment of area makes me think more along the lines of Gemsbuck, Wildebeest and Kudu. Although Eland are hunted often in Namibia.
I'd use a Berger for any of those. Kudu aren't as tough as Gemsbuck or Blue Wildebeest IMHO. Eland I'd be cautious with a .30 match bullet. Springbuck kill easily - I've shot them (and Blesbuck too) with A-Max 178's with devastating effect.
Scoops uses Sierra's and I used his .308 with 168gr Match King on a Black Wildebeest (not blue) on the shoulder at 80m shot was through and through.
Bear in mind that Sierra .30 cal jackets are quite substantially thicker than the Berger's J4.
Bergers may be less likely to exit larger animals and if you think you need a through and through for a blood trail to track, then they may not be for you. In open country tracking is generally not a problem, but in heavier bush a lung shot with a bullet that has a devatating effect may mean a very dead animal lost due to difficulty in tracking.
Where I have hunted in Namibia I'd be comfortable with my .300 WM and Bergers (save for Eland where I'd prefer a bondeed, or monolithic of some sort based on my extremely limited experience).
I've never shot Zebra (that striped meat puts me off /ubbthreads/images/graemlins/crazy.gif) , but they can apparently be very hardy, many PH's suggesting some very large calibres for hunting them.
Having seen Zebra I'd take them on with my Bergers as well.