Hello,
It appears that most golden firearms are now broken after the most recent update. Accuracy values are being overrided by something. It was fine last year. Orange/Purple/Blue versions function as normal. Even a golden double barrel I picked up legit seems pretty bad. I know most of these are mod only.
Tested on a Modded, and a fresh reinstall vanilla game.
Gold Rifle
Orange Rifle
If a gold weapon is modded into something else, the accuracy issue persists. In that case the properties in the edited script do not increase accuracy either (even after editing.)
I'm currently looking into a work around. I'm not sure which files were edited in the update.