Moughon v. State, 57 Ga. 102 (Ga. 1876)

2d. Because the court erred in admitting the opinion of the witness, J. J. Bush, as to the time which had elapsed since the gun had been discharged, accompanied by the facts upon which he based such opinion, he having also stated that he had been familiar with the use of guns all his life.3d. Because the court erred in admitting the testimony of James J. Mayo, to the effect that the shot drawn from the loaded barrel of the gun on the day after the shooting corresponded in size with those found in the person of Tillory and in the banisters of his house, the witness having compared them.