Where prosecutors emphasized the ammunition found in a confiscated handgun, the trial court’s willingness to allow the evidence to be presented was a case of plain error and required a new trial.The 1st District Appellate Court reversed and remanded a decision by Cook County Circuit Judge Matthew E. Coghlan.On June 15, 2014, police officer Ricky Hughes, conducting surveillance of a controlled drug buy, noticed a black Camry driving suspiciously. It circled the block repeatedly, and on its fourth time around, was …