Credit to Treyarch for making shotgun spreads decent without being forced to use anything to improve them. Gain benefit from going ADS...
Couple of people told me that Treyarch had done something special with shotguns on top of that. Sooo
Damage/range has taken major nerf the result is weapon which is worse than pretty much every weapon at close range.
One hit kill range does not make it worth using them
KRM based on my playtime has one hit kill range of 2m to 4m which is shortest one hit kill range we seen by far...
Easy to shutdown player using a shotgun and results in loads of deaths
One or two epic moments are not worth the pain
SO shotguns suck loads
Haymaker/Breccui are okay but still suffer from damage/range issue. Agrus is better compared to KRM but not that saying much.
If you want to use a shotgun try the Haymaker/Breccui or Argus avoid the KRM at all costs.
Getting better results using LMGs in gamemodes which it does not suit it.