California Code, Penal Code - PEN § 26365

Paragraph (1) of subdivision (a) of Section 26350 does not apply to, or affect, the open carrying of an unloaded handgun by a member of any club or organization organized for the purpose of practicing shooting at targets upon established target ranges, whether public or private, while the members are using handguns upon the target ranges or incident to the use of a handgun at that target range.