Thread: Remmington Muzzle loader

I saw this online (cruising youtube at silly hours....)
https://www.youtube.com/watch?v=5_dM55a6FHY

If they are going to the trouble of fitting a bolt, it uses a case with primer and powder and the only thing that appears to go down the muzzle is the bullet, would it not be easier to fit the bullet to the front of the case and have a bolt action?

Is there something I am not seeing here as to why they would think this is a good idea?