This is bullshit. A lot more doubles were made in smaller calibres like the 303, 250-300 and what not than in the 465, 470, 500, 577 and 600. The bulk of them used on dangerous game would have been in medium calibres like the 450-400 and similar.

You forgot the 333, 375 2 1/2" as well as the .275 / 7mm double's.

In regards to "stopping" which was mentioned on one of the posts above, excepting Elephant, a 240gn 318 Bullet to the brain will stop a Buffalo and any other animal. The KEY is to hit it in the brain - or Spine - because hitting it anywhere else with anything else isn't going to stop it.

I've done it twice with a 338 and 250gns and their isn't much difference between a 318WR / 240gn and a 338 / 250gn when facing a charge ! you either brain it or don't.

OK, neither the 318 or 338WM have the "Shock" power, but unless you step up to a 500 and above, the others between the 2 calibre's don't either.