On November 19 last year, Vince Tominiko, 26, shot Tremaine Pasi, then 21, in the abdomen as he lay on the ground in a car park.
The victim had just been beaten up and had his head stomped on by others following an altercation at a bar.
Tominiko also shot Mr Pasi's brother Foisa, then 27, in the buttocks during the same incident.
The attack took place after all three attended a 30th birthday party at the Hampton Park Tavern, attended mainly by church group friends.
Tominiko previously pleaded guilty to intentionally causing injury, intentionally causing serious injury in circumstances of gross violence, possessing an unregistered handgun, driving while disqualified and committing an indictable offence.
Tominiko has already served 292 days in pre-sentence detention.
He was sentenced in the County Court of Victoria on Friday for eight years, four months and 49 days, with a non-parole period of six years.