so here’s the interpretation of both white, and gun taken from dream moods
To see a gun in your dream, symbolizes aggression, anger, and potential danger. You may be dealing with issues of passiveness/aggressiveness and authority/dependence. Alternatively, a gun represents the penis and male sexual drive. Thus, the gun may mean power or impotence, depending on whether the gun went off or misfired.
To dream that you are loading a gun, forewarns that you should be careful in not letting your temper get out of control.
To dream that a gun jams or fails to fire, indicates that you are feeling powerless in some waking situation. Perhaps you need to attack your problems from a different approach. Alternatively, a malfunctioning gun represents sexual impotence or fear of impotence.
To dream that you shoot someone with a gun, denotes your aggressive feeling and hidden anger toward that particular person.
To dream that someone is shooting you with a gun, suggests that you are experiencing some confrontation in your waking life. You feel victimized in some situation.
White represents purity, perfection, peace, innocence, dignity, cleanliness, awareness, and new beginnings. You may be experiencing a reawakening or have a fresh outlook on life.�Alternatively, white refers to a clean, blank slate. Or it may refer to a cover-up. In Eastern cultures, white is associated with death and mourning.