Pål Sjölander is in charge of the project at the police in the Västra Götaland area, which includes Sweden's second-biggest city of Gothenburg.
He says they have had 100 officers working on this since September 2013
Sjölander says there has been a dramatic drop in shootings within 2014. From 48 in the first third of 2014, to just 4 in the last part of the year.
"It took almost a year before the shootings went down. We focused on a number of highly active criminals and followed them all the time, stopped them and worked close to them all the time. We took a lot of guns from these people and now they are afraid to carry them. They hide them in the forest instead. And so it takes a while to fetch a gun, and in that time they can calm down and think about the situation.
He says the problem is rooted in a number of gangs that "control" different areas of the city, and the shootings are always about gang disputes.