It's possible I suppose but the damage it would do may not be enough to actually destroy the machine behind it afterward with the armor. Granted Leos can destroy Virgos as of endless waltz but grunt units aside that's just how I view things. Likewise GN fields may weaken the shot a bit too but it has been known to disperse energy just like an I-field so maybe they are similar. After all a physical weapon did get through the GN field of Virtue in one episode.