Where did the shell casings go when firing from the on-board machine guns?

Where did did the the shell shell casings casings go go when when firing firing from from the the on-board on-board machine machine guns?

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Where did the shell casings go when firing from the on-board machine guns?
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Where did the shell casings go when firing from the on-board machine guns? - Series Cool weapon posts, My, Military equipment, Armament, Military aviation, Bomber, The Second World War, Military history

Bomber Military aviation Military history Military equipment Armament The Second World War Series Cool weapon posts
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