Maybe there is new weapons.meta file in updated / dlc files and game takes values from there, but i doubt that. Well, you can easily search weapons.meta in OpenIV/Tools/Search..

BTW: There is already two weapons.meta - 1) common.rpf/data/ai... and 2) update/update.rpf/common/data/ai.. (main weapons / dlc weapons are seperated) and second is where game takes values, so you need edit that, but im still using pre-previous version of game so i just guess they did not added whole new weapons.meta