most powerful revolver

The worlds most powerful handgun is the Austrian Pfeifer-Zeliska .600 Nitro Express Magnum. It is chambered to fire the British developed .600 caliber rifle  bullet.  This revolver is custom made.The gun weighs in at total of 13.23lbs and is heavy enough to absorb most of the violent recoil.The recoil is not uncontrollable, but instead, tamed by the guns weight.The .600  Nitro Express cartridge was originally developed in 1899 for big game hunters, even though Holland & Holland no longer manufacture these cartridges.A .600 Nitro Express cartridges are about $40 each.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.