Career
One of the highlights of his career occurred at the 2006 ISSF World Shooting Championships, when he set a new world record of 1,181 points in the 300 m rifle three positions. Eight years after competing in his first Olympics, Berg-Knutsen qualified for his third Norwegian team as a 39-year-old at the 2008 Summer Olympics in Beijing by winning the gold medal for the rifle three positions from the World Championships. Unlike his previous Olympic games, he competed only for two rifle shooting events, 50 m rifle prone (FR60PR) and 50 m rifle 3 positions (STR3X20).
In his first event, 50 m rifle prone, Berg-Knutsen was able to hit a total of 594 points within six attempts, finishing eleventh in the qualifying rounds.
Few days later, Berg-Knutsen competed for the 50 m rifle 3 positions, where he was able to shoot 396 targets in a prone position, 374 in standing, and 390 in kneeling, for a total score of 1,160 points, finishing abruptly in thirtieth place.