The main issue i see is its just adding more weapons for the sake of adding more weapons, if weapons are to be added there should be unique and not just a shotgun with a different model. The TTT map is already really small and crowded with a lot of different weapons so any weapons that should be added need a justifiable reason to add them. There is no point having 3 shotguns if they all are basically the same.
Some suggestions for your suggestions
-Give the pistol a lower mag size and lower its damage a lot but make it full auto
-Turn the winchester into a sniper rifle without a scope, make it less accurate than the other snipers
You know just try to make the weapons feel more unique
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