Four rifles.
First,
A sporterized Mauser 7x57, extremely popular with German settlers in Africa and proven effective on all kinds of plains game. Rigby produced the .275 in the British Empire that was essentially a renamed version of the original. 3-7 classes, an alternative to the Solokhin
Second,
An American original, an 1895 lever action rifle chambered in .30-40 Krag. Arguably the parent of the venerable .30-06 in a rifle action designed in America's earlier days when a hunter relied on his rifle to feed his family and keep the wolves from the door. (lever action scope in base game is perfect here) Yeah, it's another 4-8 but so what, it's the only 4-8 lever action
Third,
Rigby's original design to compete with the 9.3x 62mm magazine rifles popular all across Africa. The .375 magnum bolt action with a 3 round magazine quickly became a favorite of professional hunters in buffalo country because of it's reliability and stopping power. The .375 has become a gold standard across Africa for all dangerous game, many credit their weapons with saving their lives. Obviously a 7-9 rifle (super popular in Alaska for grizzly/brown bear guides)
Fourth,
The .318 Westly Richards/Rimless Nitro Express/ Accelerated Express. This cartridge was designed after the British ban on military cartridge sporting rifles. This made it particularly well suited to ANY African map, used and praised by some of Africa's most famous hunters like John "Pondoro" Taylor and W.D.M. Bell. The 250 grain bullet nickel plated bullet was the source of it's fame, with extreme penetration for the likes of cape buffalo. A Softpoint 180 grain bullet that was used to hunt antelope and thin skinned game. This rifle would be an excellent, if old school, 4-9 that outclasses even the 7mm by just a bit. Modern rifles are made with 5 round magazines, but we could do with 3.
These are the top four in my mind right now, let me know what you guys think though

