He sought a discharge without conviction.
Hore supplied the gun to the unlicensed person at about 8am on the day of the incident, the opening day of duck-shooting season.
Charges were laid against Hore and three other men after a police investigation into an accident later that day in which a duck-shooter received a serious injury.
The man was injured when a gun discharged after it fell off an all-terrain vehicle.
He was dealt with by the court last month on a charge of unlawfully possessing a gun, as his firearms licence had been revoked.
Mr Robinson said Hore was unaware the man did not have a licence, although he should have checked.
The firearm was used responsibly and only a couple of shots were fired, he said.
Of the four people using guns, three of them, including Hore, had licences.
"It was not a situation where a person was given free rein of a firearm.
'The possibility of harm was quite remote.''
The offence was at the lowest end of the criminal scale, with a maximum penalty less than disorderly behaviour, Mr Robinson said.
Hore had shown remorse and had been co-operative with police since the incident.
A previous conviction in 2005 in which Hore was fined for killing a protected fur seal on the Otago coast was not considered during Thursday's sentencing, as it was not on police records.
That was because the prosecution was driven by the Department of Conservation, and it was on their records instead, the court heard.
