One who's quick to film the gunman in the western? (12)
I believe the answer is:
sharpshooter
'gunman in the western?' is the definition.
'sharpshooter' can be an answer for 'gunman' (sharpshooter is a kind of gunman). I'm not certain of the 'in the western?' bit.
'one who's quick to film the' is the wordplay.
I cannot really understand how this works, but
'one' could be 'er' (I've seen this in other clues) and 'er' is found within the answer.
'quick' could be 'sharp' (I've seen this in another clue) and 'sharp' is present in the answer.
'film' could be 'shoot' (synonyms) and 'shoot' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sharpshooter that I've seen before include "skilled marksman" , "Gunman" , "Expert marksman" , "I'm very good at firing" , "Someone with gun" .)