The old .318 Westley Richards and the .333 Jeffrey were around the bore size of a modern .338. They used to be great small to medium sized cartridges for plains game or bigger. Personally I have always regarded a good cartridge in that sort of bore size the ideal all-round medium game world cartridge.
Having said that I have a .30-06! A .30-06 will handle all game below buffalo in Australia.
-------------------- John aka NitroX
...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"