(January 22, 2016, 11:53 AM EST) -- PHOENIX — A state court judge erred by precluding a defendant from offering expert testimony that firearms examiners use subjective rather than scientifically rigorous methods in drawing conclusions from indentations on shell casings, the Arizona Supreme Court ruled Jan. 20 (State of Arizona v. Joseph Javier Romero, No. CR-15-0039-PR, Ariz. Sup.; 2016 Ariz. LEXIS 32)....