Thanks for your actual from the field knowledge.
Isn't this exactly why the 458 Lott came into being?
I am still trying to find a copy of his book "Big Bore Rifles".
Some Jack Lott lore I didn't know until I searched today:
Jack Lott's Brno Rifle
I have his original article describing the 458 "super" in Gun Digest and have been a fan of his somewhat rare writings ever since.
Rifle May 1991 "458 Lott" by G. Sitton
Yes Jack Lott was one of, perhaps the first writer with real field experience to criticize the 458 Winchester. Had Winchester developed the cartridge off of a longer version of the 375 case, which chambered in the pre 64 actions they would have had a great cartridge. The real velocity of a 500 grain bullet in the 458 was not adequate for deep penetration on raking or angular shots on animals like buffalo. A side on shot under perfect conditions is not a problem but if you have a wounded buff running away you need adequate penetration to reach the vitals. Once an animal like a buffalo is wounded and gets out of site more often than not it will take a stand and your next opportunity is head on.
Ideal velocity for a 500 grain bullet is between 2,150 fps and 2,300 fps. As bullets get heavier they will penetrate at lower velocities due to increased momentum.
On elephant the preferred shot is a head or brain shot thru the ear or head on. Head on is a tricky shot due to height of animal and typically you are very close aiming a great deal lower than between the eyes so the bullet enters the brain rather than above or over the brain, again adequate penetration is required. The side brain shot, in a perfect side on scenario is easy but if its head is turned slightly you are again dealing with angles and deep penetration. An elephants skull has a lot of bony chambers and the brain is not directly behind the eyes but between its ears.
Hippo also require a big bullet at adequate velocities, while the cats lion and leopard are much easier to penetrate, and all of the above require a properly constructed bullet.
Jack Lott was an experienced hunter some writers blame poor shot placement and him unfairly blaming the 458, but over the years poor field performance has proven he was correct.
PS I have the Big Bore Rifles book its published by Guns and Ammo Peterson's hunting 1983?, great book and no advertisements.