I knew an older hunter who used 200 Partitions from a .300 on both lions and Cape buffalo in Africa on more than one safari, with no problems. His African hunting mostly took place back when the 200 Partition was a "semi-spitzer," which basically meant roundnose.
In fact I know a retired PH who killed hundreds of buffalo on control with 180 Partitions from a .30-06, including mature bulls, and never felt a need to change. But he was one of those who used a .375 H&H for following up buffalo his clients had wounded, usually with much larger cartridges.
However, most African countries still have minimum-cartridge laws instituted in the days when all bullets were pretty primitive.
