Woah! I am surprised, there is generally a decent level of alignment between the responses on those threads and the classic literature, but not in this case. I wonder why...
Regardless of caliber, the only good shot on a charging buffalo at that distance is
straight up the nose,
when he comes with its neck stretched forward and head high. This is the only direct path to the brain at this angle.
In this case, he has not stretched his neck forward yet, or he already started dropping his head for the hook up, so I agree with
Tally-Ho HUNTING SAFARIS,
BRICKBURN and
BeeMaa. A little over the yellow dot (which I am interpreting from the unclear pic is on the nose, just under
BRICKBURN's green X), just under the eye level.
Like
Hunter-Habib, and assuming I had my .458 Lott in hands, I would have no qualm whatsoever using a TSX. It will not only perforate the skull, but go deep through the body after that, wrecking on its way a few vertebra. Those TSX are true solids, especially if they shed their petals along a particularly though bony way like in this case
Obviously, a 7x57 would greatly benefit from a solid in such an encounter... It will brain it just the same.
Any body shot at this distance will NOT stop a buffalo. Kill him, yes, stop him, no.
A shot under the boss will go over the brain. It may stun him, or it may not.