FWIW....I just spoke with one of my P/H friends in Zimbabwe regarding the .375 H&H and the Nosler Partition for buffalo. Quote: "The success of he NP is not to be diminished for plains game, up to, and including eland. The problem seems to be what makes the NP so good is its Achilles heel for buffalo. On a broad side shot on buffalo, the velocity of the .375 H&H, plus the thin forward jacket of the NP sets up too quickly on the broad, over-lapping ribs of the buffalo, then fails to penetrate deeply into the vitals." "Bonded bullets, such as Swift A-Frame, and Trophy Bonded Bear Claw punch through the ribs, and continue to penetrate, and cause internal damage."
Best to inquire from your P/H which bullet is recommended for buffalo.
