In front of you is the same Grazmec packer from the Connect Modding team, redesigned for silo packaging. The unit works realistically.

I redesigned the packer assembly itself to resemble a silage harvesting technique. I don't pretend to be completely realistic, but if you need perfection, subscribe to Patreon.

The mod processes various crops into silage, and corn and soybeans into mineral feed. In the file filltypes.xml It contains a list of recycling options; you can add your own or modify existing ones to suit your style of play.

Unhook the packer from the bag, then bring the bucket (or shovel, for those who prefer such a tool) to the end of the bag, and it will magically fill up. It's much more convenient than messing with the loader.