Massad Ayoub used to write, when revolvers were more often used in police work, of how to hit a man at a hundred yards with a snub .38.
He said to either aim at the nose or chin, I can't remember which, and the 158 gr. bullet would fall into the correct area on the chest.
McGivern used to challenge students to do such things as to hit a fly on a target at 25 yards (accomplished by one student on the third try).
I honestly think inherent accuracy is much greater than we'd expect of most firearms, but a number of factors are necressary to extract it, a good shooter, a good trigger, easily used, precise sights, etc.
It's true that military tactics about a "zone of fire" is different from that which an individual would use, but a good marksman who is welll practiced and careful, can do some marvelous things.
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