When drunk, mostly refuse gin shots (7)
I believe the answer is:
gunfire
'shots' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
(Other definitions for gunfire that I've seen before include "Fine rug (anag.)" , "Hail maybe" , "Sound of. eg. rifles" , "Repeated shooting" , "Weaponry noise" .)