357 Magnum and .50 AE. Go figure. And of course, it always works fine in the movies. Some might nitpick this choice as it doesn’t use the exact .44 S&W Magnum revolver cartridges as all the ...

44 Magnum. So, there's an argument to be made that Dirty Harry's revolver was the most powerful that was commercially available in 1971. These days, several other handguns, such as the .500 S&W ...