During his 46 years as an auctioneer, Sims became one of the best-known Angus promoters of the late 20th Century. He traveled to some 7,000 sales in 44 states, sold Angus cattle for President Dwight Eisenhower and Senators Robert Kerr and Albert Gore, and at many small production and local association sales. Sims helped make auction sales more practical, fast moving events.