Tried many different things to try and solve the loading in my a-km and I can’t load any other clips with box’s of ammo

You may have discovered this by now. But have you tried i loading the box first. There is no prompt to unload box of ammo but this is required in order to use the bullets to load

1. Put box in hand
2. Exit menu
3. Hold RT to unload box
4. Put clip in hand
5. Press B on previously unboxed ammo
6. Load the clip and shoot stuff