Unknown
No
Not even close. There are several more powerful handgun cartridges, not counting the single shot pistols that use rifle cartridges. While Dirty Harry may have proclaimed it to be "The most powerful handgun in the world"- it is not.
There are many handgun rounds that exceed the 44 mag. 454, 460, 500 to name a few.
Dirty Harry used a 44 Magnum in his words "The most powerful handgun in the world." Specifically, it was a Smith and Wesson Model 29 in a .44 magnum. In addition, it is not the most powerful handgun in the world (not even at the time of filming.)
The most powerful handgun in the world has to be the Austrian Pfeifer-Zeliska .600 nitro express revolver, but the most powerful PRODUCTION handgun is the Smith & Wesson Model 500 revolver that shoots the .500 cartridge.The .600 Nitro Express Zeliska revolver is an Austrian single-action revolver produced by Pfeifer firearms. It is the largest handgun in the world, weighing in at 6.001 kilograms (13.230 lb) and having a length of 55 centimetres (22 in). The cylinder section alone weighs 2.041 kilograms (4.500 lb). The Zeliska is also the most powerful handgun in the world, producing a muzzle energy of over 6 kilojoules (4,400 ft·lbf). The weight of the gun helps control the recoil, making controlled shooting possible.
The pistol in the movie Dirty Harry was a .44 mag - "the most powerful handgun in the world" according to "dirty" Harry Callahan.
It was a model 29.
It was a Smith and Wesson 44 Magnum "The most powerful handgun in the world" according to Harry.
It is the same power as any other firearm that is firing the same caliber cartridge. Contrary to myth, this is NOT the most powerful handgun in the world- not even close.
A VERY good handgun- for most puposes. Durable, reliable, accurate, and powerful.
Probably, almost certainly, the .600 Nitro Express is the overall most power handgun bullet. Let me alter this answer by saying the .600 Nitro Express is a rifle round that one company made a pistol for. The most powerful handgun cartridge is the 500 S&W Magnum.
No. Most powerful handgun can be a bit ambiguous, considering that many short barreled rifles are sold in the US as handguns, minus the buttstock. As for purpose made and designed pistols, in the traditional sense, firing a dedicated handgun cartridge, the answer still is no. The most powerful production pistol in the world which fires a dedicated pistol cartridge is the Pfeifer Zeliska revolver. It fires a .600 Nitro cartridge. There are several other dedicated pistol cartridges which eclipse the .44 Magnum in terms of power - .454 Casull, .50 Action Express, and .500 Smith & Wesson Magnum are some of the better known ones. Even when Clint Eastwood claimed in the movie 'Dirty Harry' that the .44 was the most powerful handgun cartridge in the world (the movie was released in 1971), he was already outdated - the .454 Casull had already been introduced in 1959.