Arthur Westover’s greatest success in trap shooting came at the 1908 Summer Olympics where, alongside George Beattie, Walter Ewing, Mylie Fletcher, David McMackon, and George Vivian, he won a silver medal in the team event. He also competed individually and finished joint-fifth, with Great Britain’s Charles Palmer. He won the Lefever Gun Event in 1910 and was half of the duo that earned the Canadian title in the two man team event in 1908. Living in Sutton, Quebec nearly his entire life, he was heavily involved in local affairs and was a member of the executive committee for the town’s centennial in 1902. By career he was active in agriculture and dog breeding and also worked for the government as an agent for the Province of Quebec Association for the Protection of Fish and Game. He was also an active Freemason.