Increase (some) shotgun falloff range.
With alot of these shotguns, with the exceptions of the Tigris and maybe a couple others, it makes them obsolete as opposed to simply waving your melee weapon like a madman. Even if it isn't a GOOD melee weapon.
OH YOU WANT REALISM? Edit: Going to use this post replay for future reference, less typing.
Now let be REAL, Shotgun last time I check can NOT Snipe Target about 1,000Km away, but a scoped Bolt-Action Rifle can with slight bullet drop.
^Being Realistic^ and if you WANT Realism, there are games like ARMA(3).
Good Day.