Boston Beer reported a 6.4% year-over-year drop in shipment volumes and revised volume guidance down for the full year.Key PointsNet revenue fell 4% year over year due to lower shipment volumes.Rising production costs contributed to net income falling 9.8% to $52.3 million.Management revised down volume guidance for the full year.Beverage specialist Boston Beer (SAM -0.49%)reported Q2 2024 earnings on Thursday that showed a 4% decrease in net revenue year over year to $579.1 million. Net income came in at $ ...