Dreams involving themes of death and violence, such as encountering a gun and feeling a sense of shock and numbness, can be quite intense and often signify deeper emotional or psychological processes. Here are some interpretations of the elements in your dream:

1. Confrontation with Fear: The barrel of the gun may represent a confrontation with something you fear in waking life. This fear could be linked to a significant change, loss, or a feeling of powerlessness in a situation you are facing.
2. Transformation: Death in dreams often symbolizes transformation or the end of a particular phase in your life. It could indicate that you are undergoing significant changes and are grappling with the emotional impact of these transitions.
3. Numbness and Shock: The feelings of numbness and shock you experience could reflect your current emotional state. Perhaps you feel overwhelmed by events around you, or you are struggling to process certain feelings or experiences in your waking life.
4. Continuation of the Dream: The fact that the dream continues into new plots may suggest that there are unresolved issues or emotions that your subconscious is attempting to work through. It can also indicate resilience and adaptability, as your mind seeks new narratives despite the distressing themes.
5. Seeking Control: The idea of being at the mercy of a gun can symbolize a sense of powerlessness. Consider areas in your life where you may feel out of control or where decisions feel like they are being made for you.

To gain further insight, consider reflecting on any current life situations that may be contributing to these themes in your dreams. Keeping a dream journal can also help you track patterns over time and provide you with clarity on recurring symbols and emotions. If the dreams continue to distress you, discussing them with a therapist may provide additional support.