Packing below decks might end a gun battle (7)

I believe the answer is:

dunnage

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'packing below decks might' is the definition.
I can't tell whether this defines the answer.

'end a gun battle' is the wordplay.
'battle' is an anagram indicator (the letters disrupted as if in battle).
'end'+'a'+'gun'='endagun'
'endagun' anagrammed gives 'DUNNAGE'.

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(Other definitions for dunnage that I've seen before include "Anne dug (anag) - sailor's baggage" , "Loose material for packing cargo" .)

I've seen this clue in the Sydney Morning Herald.

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