The men's relay ended with a blue-yellow fiasco after a more difficult start.
For the ladies, with Linn Persson on the first stretch, it went all the better.
The Värmland woman started with a faultless in the prone position before she faced a bar in the standing position.
Celebrated after impressive riding
After a fine effort by Anna Magnusson, Sweden switched as fourth when it was time for the Öberg sisters.
And despite four misses on Hanna Öberg, she gave little sister Elvira a 21-second lead at the last switch, after impressive riding.
- It's a class difference, says SVT's expert Björn Ferry.
Elvira Öberg then extended the lead, shooting flawlessly and giving Sweden a superior victory – 28.1 seconds ahead of second-placed Germany – in Kontiolahti.
Norway grabbed third place (31.5 seconds behind).
This was Sweden's third victory in as many days.
On Tuesday, Martin Ponsiluoma won the distance, something Hanna Öberg repeated a day later.
The article is being updated!