John,
Force = Pressure x Area therefore a similar pressure with a bigger area has more force and a 460 Weatherby has a much bigger area at the head than a 30-06, and consequently much more force on the action face.

This is exactly why the 9.3x74R is by far the most common chambering for double rifles of all persuasions where as the 9.3x62 is almost never chambered in doubles. Basically the same velocity but much lower pressure of the 9.3x74R due to the longer less efficient case. Consequently much less stress on the junction of the action face and also on the hinge pin.

The 460 Weatherby would probably be the worst choice of cartridge for a double. The gunmakers in Ferlach make all sorts of dumb arsed guns, mainly for Ultra rich Russians and Arabs. Neither of which rarely go actual hunting and neither of which can shoot. Most of these bullshit guns will never be fired. The same companies also make DG Double rifles with no checkering so that it doesn't interfere with the look of the grain in the stock???? Wanker guns made for wankers.

Matt.