text: any information on ballistics of derringer used to assassinate lincoln?   on stage, actor harry hawk said the last words lincoln would ever hear "well, i guess i know enough to turn you inside out, old gal—you sockdologizing old man-trap...". when the laughter came booth jumped into the box the president was in and aimed a single-shot, round-slug .44 caliber deringer at his head, firing at point-blank range. the bullet entered behind lincoln's left ear and lodged behind his right eyeball.