Something of a shotgun overhaul, mostly aimed at the ammo types. Might be slightly unbalanced.
Damage changes are now multiplicative instead of flat Shotguns deal 15% bonus damage within 5m. Optimal Ranges and Falloff unchanged.
Buckshot +15 -> 1.15x damage
AP Slugs +15 -> 1.35x damage, +8 -> +12 accuracy
HE Rounds +3 -> 1.75x damage, 10% pickup reduction
Flechette -3 -> 0.85x damage, can pierce multiple enemies, 10% faster reload speed, 10% pickup
Tombstone -4 -> 0.8x damage
Dragon's Breath -6 -> 0.7x damage
Shh! -4 -> 0.95x damage
The Silent Killer Suppressor -4 -> 0.85x damage
Donald's Horizontal Leveller +2 -> 1.05x damage
King's Crown Compensator +1 -> 1.05x damage
Shark Teeth Nozzle +2 -> 1.10x damage
(NOTE: Some ammo + barrel extensions are wonky because the multipliers are added together flatly)