A teen murderer who boasted of putting his enemies in “body baggies” hours after a fatal mistaken-identity shooting has been handed a hefty jail sentence but escaped life imprisonment.  And the victim’s father has spoken of his excruciating grief, saying he has lost purpose and “reason for life” after his son’s death, and feels he “failed as a father” for not being able to protect his boy.  “The pain and guilt will stay with me forever,” Misi Faletolu said in a victim impact statement about his slain son, Jaymis.  “Jaymis’ life was full of promise, and now it’s been taken away in an instant because you thought you were tough.”  Chaelim John McCarthy, now 20, fired a gun through the window of a green Lexus after a violent early-morning altercation in Manurewa on New Year’s Day 2024.  The blast resulted in a fatal head wound for Jaymis, who was the front-seat passenger. The car’s 17-year-old driver lost an eye from the same blast but survived.  McCarthy didn’t realise it at the time, but both victims were his mates.  He thought the car belonged to two people who had just violently raided the New Year’s Eve party, throwing punches at random people before running off shouting Head Hunters gang slogans, lawyers said.  Police investigate a Lexus on Addington Ave, Manurewa, where two teens were shot – one fatally – on New Year's morning 2024. Photo / Dean Purcell  McCarthy admitted to manslaughter at the start of his High Court trial in Auckland in August this year, arguing he did not intend to shoot the victims and was only trying to intimidate them by aiming for the vehicle’s bonnet.  But the jurors found him guilty of reckless murder.  It emerged that on the day before the killing, McCarthy had posed for a photo with a gun while wearing a balaclava.  And hours after the shooting, he texted a friend saying: “Just killed three [racial slur],” adding, “Body baggies”.  He also said: “I’d do it again, uso. They chose the gangster life. They wanna be gangster. We showed them that life.”  McCarthy appeared yesterday for sentencing before Justice Laura O’Gorman, who said that because of his youth and background, it would be “manifestly unjust” to sentence him to life in prison.  The public gallery was packed with the victim’s loved ones, as well as a large contingent of family and friends supporting the young killer.  The court heard McCarthy had taken a shotgun wrapped in a bandanna to the party for protection as he suspected potential trouble from a rival Kelston group.  When two men burst into the party and attacked revellers, McCarthy was left bleeding after his earring was yanked out. Two of his teeth were also dislodged.  He was drunk and made an impulsive decision to fetch the shotgun from a car before pointing it towards the Lexus and firing, the court heard.  On arresting 19-year-old Chaelim McCarthy in January 2024, police found a shotgun in his car that had been broken into three pieces. The weapon was introduced into evidence at McCarthy's High Court murder trial. Photo / Craig Kapitan  Defence lawyer Ron Mansfield said the then-teenager did not intend to kill. His aim was affected by his intoxication, and he acted impulsively due to his injuries after the unprovoked attack.  “They just wanted a quiet night,” Mansfield said of McCarthy and his friends.  “Despite all they were doing to keep themselves safe, violence still found them.”  Mansfield dismissed the boasting text messages as “complete bravado from a drunk youth who just didn’t understand what had occurred”.  He asked the judge to impose a finite sentence, rather than crushing the young man’s hope and rehabilitation prospects.  McCarthy had made a split-second decision that he would regret for the rest of his life, Mansfield said.  The devastating loss caused by his client’s offending “will only be compounded by a sentence of life in...