This video walks you through the how to load/unload medium format (120) film into a Hasselblad 500 film camera. The model I use in the video is a "500C"; however, these steps broadly apply to the other Hasselblad 500 variants as well (i.e. CM, etc.)

Link to Hasselblad 500 User Manual:
https://www.butkus.org/chinon/hasselb...