Crossword Genius

Exchange of lead in film? (8)

Ross

I believe the answer is:

gunfight

I'm a little stuck... Click here to teach me more about this clue!

This might be a double definition.

'exchange' is the first definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe you can see an association between them that I can't see?

'lead in film?' is the second definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'of' is the link.

Can you help me to learn more?

(Other definitions for gunfight that I've seen before include "Battle in Westerns" , "Shoot-out (at the OK Corral?)" , "There was one at the O.K. Corral" , "At which Wyatt Earp broke the Clanton gang" , "Showdown at the OK Corral" .)

I've seen this clue in The Telegraph.
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