the only shotgun stronger than the pistols is the KSG which is terribly inconsistant, the rest of the shotguns do 33x8 or some other odd number usually making the max damage somewhere inbetween 200 and 400 when all the pellets hit, and even then their damage drop off is even more than pistols and the bullets dissaper unlike the pistols.
shotguns are pretty much the exact same way as you are describing pistols, so explain why aren't they in the secondarys slot when they have the exact same disadvantages?
They have very low range and spare ammo.
The Tac.45 has only 30 spare rounds. While, in theory, this allows 15 kills (Not including the 5 in the clip), in practice this is next to impossible due to the guns recoil.
The Five-Seven has even less range (Being the lowest damage semi-auto in CQC), but has twice as much ammo and has less recoil.
The KAP-40 and B23R both take three shots to kill minimum, have only 45 rounds spare (Which with the KAP-40s high recoil and high fire rate is pathetic) and no headshot multiplier. The B23R also has less range than any of the Burst fire primaries (Except for the Chicom CQC), so will not perform well outside of CQC. They also have no ADS zoom, so they are even harder to use outside of CQC.
Also, if anyone thinks the Executioner is overpowered, they are an idiot.