Hi Bebo,
Here in Alaska, the .338 Winchester is very popular, maybe the most popular cartridge for moose, bear and bison with 250 grain to 275 grain bullets.
However, the 9.3x62 is slowly becoming popular for those animals here as well, with 250 grain to 286 grain bullets.
In the other Western States of the USA where elk are commonly hunted at longer ranges, the .338W is likewise very popular, with 225 grain bullets.
The same is true in much of Canada.
In Africa, it is a shame that the .338 W is not more popular for so called "plains game" than it is, because it is extremely effective on everything from duiker to eland, with 225 grain to 275 grain bullets.
No doubt the well deserved 100+ year popularity of the .375 H&H is why (my favorite hunting cartridge).
Generally speaking, the .338W is only superior to the 9.3x62 for African PG when hunting in wide open places, such as most of Namibia or South Africa's Eastern Cape, or the Highveld, etc.
I would definitely prefer the 9.3x62 otherwise, since it shoots plenty flat enough for most of the rest of Africa, plus it has less recoil than the .338W and uses a very heavy bullet for it's caliber (all excellent attributes for Africa).
Best regards,
Velo Dog.