gunshot,
potshot, round, volley, report, bang, blast, explosion
injection,
inoculation, vaccination, jab (UK, informal)
bullet,
cannonball, slug, gunshot, buckshot, ammunition, pellets, shells
measure,
drink, glass, tot, slug (informal), jigger
picture,
photo, photograph, snapshot, snap, frame, view, scene, sequence,
composition
try,
go, attempt, turn, crack (informal), stab (informal), bash (UK, informal)