I think it was about 1989 when Randy Brooks joined John Nosler as one of the most influential designers of premium hunting bullets and introduced the Barnes X bullet. If memory serves me correctly he then took the great Thee Seven Five H&H to Africa and tested his 270 grain X bullets on Cape Buffalo. The rest of the story is still being successfully written in the worlds hunting fields.
If I were using a .375 H&H in America I would use the 250 grain TTSX, in Africa I would use the 270 or 300 grain version and expect good results, if I did my part and put the bullet in the right place.
1Akshooter,
Everything you said is true. Also puts the many claims of using Barnes X bullets in the mid 80's in their proper place.
I have bedded, prepped rifles and loaded the .375 H&H with 300 grainer's for African Buffalo use and the rifle owners unanimously praised the performance upon their return to Oz.
John