In the Department of Justice, Bureau of Criminal Identification and Investigation, conducted by David Burd, the firearm identified as the likely murder weapon at Lake Herman Road was a J.C. Higgins 80 pistol. The Sears, Roebuck & Company specialized in sporting goods and recreational equipment between 1908 and 1962, with the Sears JC Higgins eventually replaced with the Ted Williams brand. The Sears, Roebuck & Company manufactured their own paper targets throughout the 1930s, 1940s and 1950s - the very targets a young Zodiac may have used. The following target suggested "For best results with .22 Long Rifle."
#1 Paper Rifle Targets 1930s.
#2 Paper Rifle Targets 1950s.