Wigger is often regarded as having been the greatest competitive rifle shooter ever to have taken aim for the United States.

He was a member of 16 major U.S. international teams, starting with the 1963 Pan-American Games[3] and his record includes: 22 World Championships (two individual, 20 team); seven Pan-American titles; 18 victories in the Championship of the Americas meet; 16 victories in the Council Internationale Sport du Militaire meet; and in those four meets, plus the Olympics, he won 108 medals.

He ran the 23rd Infantry Division Sniper School in Vietnam in 1971,[4] and won the gold medal for free rifle, 3 position, with a score of 1155 in 1972.

Under him, the team qualified for the championships in nine seasons, capturing the title in 2005, bronze in 2006 and silver for two years after that.

His other son, Danny, is an accomplished Smallbore Rifle Prone Shooter.