these guys say US$10 for ball.
http://www.anzioironworks.com/MAG-FED-20MM-RIFLE.htm
No idea when the site was updated last
Although, I suspect that anyone serious enough to buy a 20mm anything will reload from "pulldown" components.
http://www.anzioironworks.com/MAG-FED-20MM-RIFLE.htm
No idea when the site was updated last
Although, I suspect that anyone serious enough to buy a 20mm anything will reload from "pulldown" components.