By the time he moved to Otterup in 1889 he was already known as a gun expert, and frequently received rifles from other places for reparation and tuneup. In 1904 he founded a gunsmith workshop. In 1908 he learned about a talented young shooter, Niels Larsen, who dreamed of having a rifle from Schultz. Eventually Schultz hired Larsen in 1910. They competed together at the 1912 Olympics and became business partners in 1917. In January 1919 they opened Schultz & Larsen, a rifle manufacturing company based on the Schultz's workshop. Earlier in 1916 Larsen married Schultz's daughter Ellen; they had a son Uffe Schultz Larsen, who later competed in four Olympics and took over the company.