There’s been work done on it since these pics, mostly with the scope mount and some elevation lock mechanisms so I can lock elevation travel down once it’s aimed, so the worm drives aren’t taking beating. In theory.
I originally designed it to use 20ga shells for containing the powder and providing ignition, but that quickly changed to 12ga shells with little modification. 20ga held 100grains, 12ga holds 150gr(H4350). So obviously 12ga is better.
The section that holds the shell(comprised of four thin pedals) breaks away on ignition leaving a flat based, rifled projectile to exit. In theory.
The chamber pressures pins the break-away pedals and shot shell to the walls of the chamber, ensuring it stays behind and can be easily pulled out for quick reloading.
In theory it seems this thing could fire 3-4 rounds a minute if you didn’t take any time to aim between shots.
The dart sabots take longer to load than the pretend artillery shells though. They don’t have the powder section self contained but rather have to be carefully loaded individually
