Question: Any information on ballistics of derringer used to assassinate Lincoln? 

Answer: 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.
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