ORIGINAL: ShatoDavis
Actually it is possible. As James said earlier, this isn't anything new to the wildcat community. An easy comparison is the 30-06 and the 338-06. Check these listings at Hodgdon powder:
http://www.hodgdon.com/data/rifle/30-06.php
http://www.hodgdon.com/data/rifle/33806.php
As you can see the 30-06 pushes a 180 gr. bullet at 2600-2700 fps while the 338-06 can push a 200 gr. bullet at 2700-2800 fps. plug that in to a calculator and you get approx. 2700 ft. lbs of ME for the 180 gr. 30-06 and 3200 ft. lbs of ME for the 200 gr. 338-06 bullet. Now granted thats only 500 ft. lbs of energy not the 6-700 discussed. This is a different case but it clearly shows that it is definately possible to do what you claim "cannot be possible."
No.
Something you're doing isn't adding up.
I just compared
180 gr. 30-06 and
250 gr. .338-06 and the difference was only
283 ft/lbs.
I'm still not buying it.