A court in Falun, central Sweden, fined him 80 days’ earnings for firearms offences.
In August 2005, inspired by seeing a potato thrower on television, the 25-year-old man bought parts for the gun in a local supermarket, Södra Dalarnes Tidning wrote.
The man and a group of friends met in a flat in Bojsenburg, in the heart of Sweden, loaded the weapon with potatoes and began firing from the balcony into the car park below, reported the paper.
Authorities confiscated his gun as well as two sacks of potatoes found in the apartment.
Police tests showed the tuber cannon had a more potent firing power than a revolver.