Hello Backyardsniper,
Having only taken one buffalo, my opinion is just that...a one buffalo opinion.
Having now confessed that my buffalo experience is singular, nonetheless I agree with Red Leg and others, who say the .375 H&H, with today’s super tough soft points is by reputation, perfectly adequate for buffalo.
And, as super tough softs go, I prefer the Swift A-Frame.
The .375 becomes very appealing when (also mentioned by others already), you are doing a mixed bag hunting safari.
It is generally speaking, my favorite hunting caliber.
If I did not live in Alaska and I never visited Africa, I might sing a different song.
However, I have shot many species from ground squirrels through eland with it and it is the best choice, if a fellow was to own but one rifle for tramping the earth.
Anyway, all that having been said, each world wide species of buffalo are special.
Even though I’ve encountered African buffaloes many times, I stand in awe of them every time I’m near them.
I have similar feelings about eland as well (in case you know anyone who gives a snort).
Because I hold buffalo in such high esteem and because they are large and tough, I will always prefer to use a bit more gun on them than the .375, if given a choice.
The minimum buffalo rifle for me would be one of the .40 calibers: .400 Jeffery (aka 450/400 NE), .404 Jeffery, .416 Rigby and so forth.
Furthermore, calibers such as the .458 Winchester, .458 Lott, .450 NE, .450 Rigby Rimless, .470 NE, .500 NE, .500 Jeffery and .505 Gibbs do not seem too much, IMO.
For the one buffalo that I was blessed enough to hunt so far, I used a large bore double that I had owned at the time, in .450 No2 NE.
I gave him the classic soft and solid, left and right barrel respectively.
The first shot (40 paces in thick riverine foliage) was a very mortal wound but, he did not agree at first.
Even though he dropped to the impact, nonetheless he got right back up and ran, quartering away from me.
Upon receiving my second bullet (about 120 paces), he tumbled in a mighty cloud of dust and was then quite dead.
If I had used a .375 and 300 gr A-Frame on that first shot, I expect it is likely that I would have observed something of a similar outcome.
However, I like using a large powerful caliber when among heavy dangerous animals.
If I am able to again hunt buffalo and also lesser species on the same safari, I would enjoy using a .404 Jeffery Mauser, equipped with a low power scope.
Since I sadly do not own a .404, neither do I know anyone in Namibia who might loan / rent one to me, this is not likely to happen lol.
I do however own a .416 Rigby (built on a CZ 550 action) that would, I presume be a real peach for a proverbial mixed bag hunting trip, including one buffalo, plus antelopes, zebra, warthog, etc.
Khomas Highland Hunting Safaris (my employer) has for rent a Mauser in .416 Rigby caliber.
So, since I no longer care to bring firearms across international borders these days, I could practice mightily with my .416 at home and then use the camp .416 when I arrived in The Zambezi / Caprivi concession.
Your intent to use a .458 Lott on buffalo is IMO a splendid idea.
I’m one of these rifle grumps who keeps each rifle zeroed and well practiced with one specific load per rifle.
Since I’ve never wanted to carry multiple rifles across the planet, I would consider in your situation, asking your PH about bringing for your .458 Lott, only 450 grain bullets (A-Frame of course LOL).
These should be (my best under-experienced guess) very adequate for buffalo and yet would fly a bit flatter for that 200 yard shot on a special bushbuck, etc.
Here in Alaska, the .458 is somewhat popular, loaded with 400 to 450 grain bullets for moose (and bison) hunting.
It’s well more than needed for these 1600 pound deer.
Furthermore, our 2000 pound bison are reportedly nowhere near as impact resistant as African buffalo are but, our bear numbers are way up lately.
And once you’ve bumped into a mature grizzly in thick brush, even the.458 suddenly seems small.
Anyway, whatever rifle / rifles you decide to bring, just practice from the sticks.
Practice, practice, practice and then practice some more.
Best Regards,
Velo Dog.
PS:
The trend lately for buffalo hunting seems to be gradually shifting toward using only premium super tough expanding bullets.
Seems like more and more PHs prefer clients not using solids for follow-up shots anymore, just premium softs only.
Again, my one buffalo experience is hardly a burning bush of wisdom.
However, my experiences in 5 trips to Africa has taught me to believe what the PHs say.