Steve Williamson first registered targets in 1969 at the Golden Valley GC. Two years later he posted his first 100 straight at that club and reached the 27-yard line at Kingsburg GC. Steve won long-yardage trophies at the 1985 Spring Grand American and the 1995 Golden West tournament with 98's At the 2003 Western Grand he netted a yardage award with 98 plus class prizes in the all-around and high-over-all. A year later he was AA runner-up in the Singles Championship.

Steve's numerous Western Zone honors include the 1990 all-around championship with 398 and the 1995 handicap crown with 100, which completed his Grand Slam. He has also won two class trophies with 200s in the title singles.

Steve has been on several record squads. He was one of the five who hit 497X500 doubles at Redlands in 1991, a record which stood for six years, and at El Paso (Texas) GC in 1997 he was on a record-tying fivesome which totaled 498. One year later at Spanish Fork GC in Utah Williamson shot with Charles W. Long, Neil Burbidge, Dean Neumann and Jerald Mitchell to establish the current squad high of 499. Steve broke 100 each time, and he has registered more than 30 perfect twin-bird scores.

In 1997 at Spanish Fork, Steve shot with the same four to set the 27 yard handicap squad record of 495X500. Steve has had three 100s from the back fence.

Steve has been named to the state team 10 times. During his shooting career he has fired at more than 172,000 singles, 215,000 handicap and 189,000 ATA doubles targets. In 1994 he became the first Californian and sixth ATA shooter to register 100,000 in all three disciplines.

Steve Williamson was inducted in to the California Trapshooting Hall of Fame in 2006.