>But the bullet itself is probably "off the shelf" and so would be the powder and case too. At this level I wouldn't be surprised if they did something ridicul

>But the bullet itself is probably "off the shelf" and so would be the powder and case too. At this level I wouldn't be surprised if they did something ridiculous like CNC machine a copper billet bullet to ~micron tolerance/consistency. That said, from the pictures they appear to at least start with a commercial or 'to-spec' round from the company Unknown Munitions.