The most powerful handgun in the world!

For those of you who have become bored shooting your wimpy .454 Casull or your anemic S&W .500, you now have a choice to move on up to something a bit more manly, the Austrian Pfeifer-Zeliska. Here's a couple of short quotes from his site on the Pfeifer-Zeliska:
The world’s most powerful pistol is the Austrian Pfeifer-Zeliska .600 Nitro Express Magnum. It is chambered to fire the British developed .600 caliber rifle bullet originally made by Holland and Holland. This revolver was not originally a full production model but a one off, built especially for a wealthy Swiss gent...Mr. Zeliska.
With a Bullet Weight of 900 grains and a Muzzle Velocity 1950 fps, it produces Muzzle Energy of 7591 ft/lbs or 3½ tons !! the Pfeifer- Zeliska .600 Nitro Express Magnum is 8 times more powerful than a Smith and Wesson.44 magnum and 3 times more powerful than the Smith and Wesson .50 Magnum.
http://www.vincelewis.net/60magnum.html