Guess we will have to look for sources.
Hamilton and Burr agreed to cross the Hudson River at dawn to take the duel to a rocky ledge in Weehawken, New Jersey, because dueling had been outlawed in New York. Both men's seconds were instructed to look away as the dueling began, lest they be charged as accomplices to the crime. Hamilton fired first and missed, most likely intentionally. Burr, possibly hoping to merely wound Hamilton in the leg, instead shot Hamilton in the lower abdomen above the right hip. The bullet ricocheted off Hamilton's rib and caused considerable damage to his internal organs, particularly his liver and spine.
Emphasis added.