Aiirsource published a video disclosing the ammunition loading by ground crews of the Apache AH64D helicopter.

Apache maintainers use dummy rounds to test the weapons systems on a Boeing AH-64D Apache helicopter. An ammunition handling check is done periodically to check the onboard weapons systems to include the 30mm M230 E1 chain gun, the AGM-114 Hellfire missile and the Hydra 70 rocket.

from Youtube, Aiirsource