Two-handed pistol shooting stances didn't even become a thing until like the Fifties. 'Fore that basically everybody shot one-handed regardless of what massive smokewagon they were toting, and that was the universal training standard - originally because the assumption was the other hand would be busy holding reins, a sword or a spare pistol (reloading pre-cartridge guns in close combat not exactly being a viable option) later mostly out of sheer inertia and because it did the job.
See also point shooting and the background context from which people like Cooper and Weaver developed the modern two-handed systems after the war.
last edited at Aug 21, 2021 10:42AM