As Robert Ruark said, "Use enough gun". I was hunting pigs.
At the time, I had a Savage Model 99 in 300 Savage, a Mini 14, and a 10/22, and an Uzi mini carbine so I needed something for Elk and anything else my buddy's dad wanted to take us after, so I bought the Weatherby. My buddy's dad passed away about 2 weeks after I got the Leupold scope zeroed, so I never used it for anything besides pigs. And now, i've sold off most of my collection as my wife and son show no interest in hunting. The wife is extremely accurate with her little .22 pistol.
Well, we did ground squirrels also. Kinda like killing mice in the kitchen with a LAW rocket. I'd say 600 yards was the limit of my skill. My dad could hit well out to 750 with his H&H, he also grew up with old school, hardcore hunters. An acquaintance/friend could hit well beyond 1000 yards, but then I guess that is why he was a Marine Recon sniper.
Sorry that world paranoia made it so that you weren't comfortable traveling to Africa with a rifle. I can understand your reluctance. Hopefully, you can get another chance!