Firearms originally loaded in location of shooting gallery? (7)
I believe the answer is:
funfair
'location of shooting gallery?' is the definition.
(a funfair might have a shooting gallery)
'firearms originally loaded' is the wordplay.
'originally' indicates taking the first letters.
'loaded' becomes 'unfair' (loaded can mean unfair or biased).
The first letter of 'firearms' is 'f'.
'f'+'unfair'='FUNFAIR'
'in' is the link.
(Other definitions for funfair that I've seen before include "Amusement park" , "place of amusement" , "Swings and roundabouts" , "entertainment for the family?" , "Amusements here" .)