Merle Stockdale was placed at 27 yards in February 1955. The first 5 to reach the new 27 yd max were; Merle Stockdale (IA), Arnold Riegger (WA), Dan Orlich (NV), Maynard Henry (CA) and Evelyn Primm (CA), all making it to the 27 by April 16, 1955.
https://www.americantrapshooter.com/...ard-line.3537/
But 27 yard scores did not appear in the Average Book until 1956.
Nice documentation of guns used by GAH winners, but not their yardage
https://www.trapshooters.com/threads...inners.256401/
I believe the last Parker was Walter Tulbert who won in 1941