In regards to the original poster, I just want to say that white hunter Cristiano Furtado (the identity of
@Crishuntbrasil) is actually a well skilled white hunter with a significant amount of dangerous game hunting experience. Being a .375 Holland & Holland Magnum man through & through, I naturally don’t agree with his assessment that this caliber should be banned for Cape buffalo hunting (after all, I’ve personally taken 17 Cape buffalo with this caliber so far). But he definitely is the real deal and knows his stuff. He’s earned the right to feel as he does, even if his desire to impose his preferences onto other hunters understandably rubs off on the wrong way to many.
An interesting historical anecdote for all. When I went on my life’s first safari to Kenya in 1974, I learnt from Mr. Cheffings (my white hunter) that the laws set by EAPHA (East African Professional Hunter’s Association) stipulated .400 bore to be the minimum legally permissible caliber for hunting “Thick Skinned Dangerous Game” (namely elephant, Cape buffalo, hippopotamus or rhinoceros). While .375 bore was the minimum legally permissible caliber for hunting “Thin Skinned Dangerous Game” (namely lion or leopard) & eland. These laws were set in 1958 under the direction of white hunter Tony Dyer (who was the President of EAPHA) at the time.
In reality however, this law was never actually enforced very strictly back in those days.
Mr. Cheffings himself let me shoot this fine specimen (my life’s first Cape buffalo) with his .375 Holland & Holland Magnum BRNO ZKK602. He also had a .458 Winchester Magnum BSA Majestic (the one with the beastly muzzle brake) but told me that he let most of his clients (who didn’t bring a heavy rifle to Safari) use the .375 Holland & Holland Magnum on (amongst other dangerous game) Cape buffalo since “They shot it more straight than the .458. And no matter how big a howitzer you’re using, it’s going to be useless if you can’t shoot straight with it”.
I will say one thing, however. If you’re exclusively hunting Cape buffalo with solid non expanding bullets (and there’s really no sane reason to in 2025), then I will concede that a .375 Holland & Holland Magnum is rather marginal for Cape buffalo hunting. Bullet diameter is too small for enhancing quick hemorrhaging of the animal during a heart-lung shot. A Cape buffalo can survive up to 18 minutes with a round nosed steel jacketed Hornady FMJ solid having bored clean through his heart. I’ve seen it happen myself. On a double lung shot, things are noticeably even worse. A flat nosed solid improves things, but not by much. If employing solid non expanding bullets against Cape buffalo, then I personally wouldn’t go for any caliber lighter than .458 bore… preferably around .500.
But modern premium grade controlled expansion bullets (such as the Swift A Frame, Trophy Bonded Bear Claw, North Fork Semi Spitzer, Wim Degol Stark Mantel or Rhino Solid Shank) have made the .375 Holland & Holland Magnum a very serious contender for Cape buffalo hunting.