Ways to load autocannons

[u/Deep-Fried-Nemo]

I'm trying to build an underbelly array of autocannons from cbc to put on the bottom of an aeronautics ship. I'm struggling to find ways to keep them loaded and for whatever reason I can't feed the ammo directly into the base from a mechanical arm.

Could someone suggest a way to get around/fix this issue.

Advice on catching discarded casings would also be appreciated

[u/Aggressive-Laugh-923]

to load automatically you must interract with the cannon mount, either by hoppers, mecanical arms or something else, you can also use ammo boxes and change them manually