40mm Bofors Question

[herr-pear]

In real life I was an engineer so this is an engineer-type question. If anyone can answer it or point me to a book or other reference that will, I shall be greatly appreciative.

How does the feed mechanism of the 40mm Bofors gun work? Specifically, how does the cartridge get out of the four shot clip and into the chamber? I consider myself a serious student of firearms mechanisms, But haven't been able to find info on this gun. I don't even know if it fires from an open bolt or a closed bolt. I suppose what I really need is a "How this gun works" type of book.

Thanks for any information you can share.

Roger Hull
Las Vegas, NV
Worlds Greatest Impulse Buyer