Bought these a while back from an online auction. Posted them over on the BOCN first with TonyWilliams helping to identifying them for me. Thanks again Tony.
30x113mm steel cased target practice rounds with dummy fuzes, inert. Painted red inside where the powder would be. The others are different types of dummies rounds. For the French DEFA aircraft revolver cannon. (If they were brass cases would be for the British ADEN aircraft revolver cannon, or light alloy cases for the M230 chain gun used on the Apache helicopter.)
30x100mm The two smaller rounds are dummies for the experimental WECOM gun fitted to the AH-56 Cheyene experimental attack helicopter.