The hunter is the weakest point in the chain of safari business.
There are hunters with skill and hunters without skill.
And no vetting.
Everybody on safari is proffesional: Outfitter, PH, tracker, skinner, cook, and laundry lady.
If they were lousy in their job, they would loose the job.
They are filtered and vetted by practice and experience.
A newbie safari hunter, comes in, and buys his first safari.
He is maybe educated on his local deer hunts and you tube high velocity frenzy.
He comes in camp, and PH sees him for the first time.
This is the picture.
What do you think, where the risk rests?
On PH or on the hunters skill and his choice of firearm?
Luckily, there are laws these days that evolved with historically developed collective knowledge and common sense.
In simplified terms, those laws evolved in "bigger is better" (John Pondoro Taylor theory), rather then smaller and faster is better (WDM Bell, and Roy Weatherby theory).
And those laws will define minimum calibers for specific animal.
That defines the rifle.
Then, comes the skill:
After the laws, then there is good business practice where PH will take a new client to the range, to check his skill.
It is not only the target they will look at, but entire process of gun handling till shot is fired.
Then, PH will determine, how to manage the hunt with client in following days, shooting distances, approach, and stalk. And even the gun carry.
"Sir, my tracker will carry a rifle for you". means client is not too skilled in safe gun handling. etc... But it is polite, and non offensive.
Cannot be taken in bad way.
Now, these days - when we really know everything about terminal ballistics, there are stories that are recycled from generation to generation, proving velocity effect is limited.
Two stories come to mind. Nosler and moose strory. And mr Grey and lion story.
Here is moose story.
View attachment 785664
And here is mr Grey and the Lion story. 280 Ross, high velocity cartridge. This is short version from rifle magazine. This ended tragically and had nothing to do with skill.
View attachment 785665
Those two stories are the ones most oftenly described and most repeated by modern authors (who love to recycle the old truths), becasue it involved famous characters in history, and infulenced the industry.
Nosler started the first premium bullet production in USA.
And mr Grey and the lion story ended the 280 Ross rifle as sporting rifle.
Moral of both stories, speed does not always penetrate and skill, does not always help.
Both hunters hit their animals. The animals were LARGE AND TOUGH.
Yes, today there are better bullets, premium bullets. But somehow, the laws tend to follow bigger is better for various types of animals, especially on DG list.
Bigger hole bleeds better.
Now what the professionals use (read: profis with skill)?
I put on this forum somewhere an article about PH and their guns.
The article was published in Gun Digest annual edition few years ago.
Most common calibers used by professionals: 375 H&H, 458 win mag, 404 jeff, plus few others in break action double rifles.
Try to find that article on the forum. Use the advanced search function with key words and my nick.