I encountered 2 failures in Africa., the first time I hunted there.

I was really upset by my partner’s Blaser R93 I saw a couple of times fail in France, action blocked by whatever reasons you may imagine. In Africa, it resulted the damned Blaser failed only once, the action refusing to lock. A thorough cleaning removed sand grains and solved the trouble.

I was far more confident with my Sauer202 . A big mistake. The 2nd safari day, the screw tightening the fore-end stock got loose and the wood was in contact with the barrel. As I didn’t take the Sauer 15 inches long Allen wrench along, I was stuck.
I borrowed the outfitter his 375HH Brno. When finishing my buff, when I have emptied my magazine, the bolt left the receiver as I was striking it backwards. Lucky my last shot was in the middle of the dying buff’s neck
I am always trusting my Sauer but count on me : now the forehand stock is tightened with loctite and the Allen wrench is in the bearer’s backpack.
Funny, my Mauser action trustworthy 375HH Dumoulin never was brought in Africa.