I have some remanufactured 9mm ammo that won't recycle G19 but runs perfectly in DB9. It is pleasant to shoot it because of less recoil than using standard ammo.
Maybe just let them pass the law. Give them suggestion and make the law as absurd as they can, so that it can be easily defeated in court once for all. Or they will come back with well thought version every year and we have to keep fighting.