Knowing Burkie, I'm certain he was talking about SEX!

470R:
For the sake of everyone here I should continue to ignore your over-zealous attempts to turn this thread into a 'debate' or a 'match' of some sort, but a couple of points do need a response.

For openers:
If you insist that John Taylor's KO figures "speak for themselves", you will agree with this quote from his published work 'Big Game and Big Game Rifles':

"Any rifle which shows a KO value of not less than 50 can safely be relied upon to knock down an elephant IN ANY CIRCUMSTANCES, though it may not stun him. Over 60 values are necessary if he is to be stunned and not temporarily dazed."

The so-called "Marrakai Load" with a KO value of 88.4 would be looking pretty damn good even as an elephant-cartridge according to Taylor! Of course, I actually suggested 1850 fps might be a good load for a modern double, giving a KO value of just over 100. No doubt you've found this to be inadequate on all the jumbos you've killed, 470R?

Regarding "CHAMBER pressure, not BARREL pressure", Huh?! Its PEAK PRESSURE which is measured, of course! Peak pressure occurs in the chamber, not in the barrel! Once the projectile leaves the chamber, pressure begins to fall immediately.
(I can't believe I'm actually bothering with this crap!)

Regarding my 'gratuitous advice' getting someone killed:
A hundred and ten years ago, Arthur Neumann "took himself off to Africa" and kicked-off a long and happy career shooting elephants professionally with the .577 cartridge and 570-grain LEAD bullets. I suspect he would have crawled through broken glass to get his hands on the marvellous steel-jacketed 650gr solids Geoff is making today! (Note that I specifically excluded ele and rhino in previous discussions, I really don't have time for any more stupid accusations).

Well, I guess you win 470R. You've sucked me in to your tiny little world of petty squabbling after all. Try not to take yourself so seriously though, mate. Get a life, go hunting or something.

Apologies to all other posters here, you deserve better than this. That's my last word: 470R can have the floor.