[@IncredibleBee]
The other character who also uses mundane firearms, Katherine, also actually has a magical power related around barrier-creation.

Not really my problem to answer these questions though, so I guess you can wait for the GMs to clarify. Not even sure when the 'firearms do nothing' rule was put up, cause the second incarnation literally had a robot/cyborg thing as a character...but then again, he never actually did any fighting.