RSA and Namibia are very civilized and pretty straight forward, however if you plan to go elsewhere in Africa to hunt, make sure you take a healthy supply of "Ben Franklin Permits", it speeds things up immeasurably and smooths out the rough spots.

I can say that I have been fortunate and have always managed to return home with my firearms, but then I travel and hunt with Remingtons. No self respecting baggage handler/gun nut would bother to steal them, especially if he reads this forum !!!

What ever you do,
DO NOT book through London, that is the closest I have come to losing my firearms. A very anti-gun, anti-hunting BA agent tried to seize them in London and it took some very heated words and an extra hour to get that sorted out. Canada - Frankfurt - Africa, that's the way I always go. I have had to transfer luggage in Frankfurt, it's no big deal and they have two very pretty young police officers to escort you and carry your firearms for you, as per their laws. There are no "looks of disgust" when moving your gun box in Germany, quite the opposite. I have had people come up and ask where I'm hunting and what kind of rifles and calibers I'm using etc. Had security guy wish me a good hunt and have had many waves and thumbs up in the terminals there. Germany is a very pro-hunting, pro-firearm country. The two young, pretty police officers were very interested in where I was going and what I was going to hunt and both shook my hand at my departure terminal and wished me luck on my hunt.
The Germans are also very particular that your firearms leave their country and the police make absolutely certain that your gun box is on your flight. So if your gun box doesn't arrive in SA or Namibia, it's not in Germany and did in fact arrive but just didn't get brought out for you......start screaming for the police immediately and I will guarantee your guns will magically appear. The police in RSA and Namibia are very straight and under a lot of scrutiny from above, as corruption has been a problem in the past, but in the last 10-15 years it is pretty much non-existent with at least the lower echelon officers that you will be dealing with.
Don't be intimidated by all this, 99% of all hunts and travel go off as planned with no glitches at all. Just do your research and find out what paperwork you must have and get it done and all will work out for you, I'm sure. It's a lot rougher going to places like Mongolia or Congo or Tajikistan.............but hey getting there, with everything you intended to arrive with, can be half the fun (they confiscated my duct tape in Congo, no idea why, PH was pi$$ed and said some very disparaging comments to the lady who took it.....didn't help)........patience, patience, patience TIA..........and always arrive at the airport
at least 3 hours ahead of flight time, and never book a connection tighter than 4 hours, if you have to transfer you own bags. Make sure your passport photo looks like you, or get it replaced. They have no qualms refusing entry if everything is not 110%............
Above all be patient with them and have fun, and always remember
TIA