Hunter Biden’s attorneys moved Monday for a new trial following his conviction on felony gun charges. A Delaware jury convicted Hunter Biden earlier this month on three felony gun charges related to his purchase of a revolver while addicted to drugs. In the motion filed Monday, his attorneys argue the conviction “should be vacated” on procedural grounds because the district court began the trial before the Third Circuit Court of Appeals formally returned jurisdiction. Read: Biden’s Plan To Subsidize Illegal Immigrants’ Health Care Comes With A Hefty Price Tag While the Third Circuit rejected H…