State v. McKeever, 101 S.W.2d 22 (Missouri 1936)

"On a trial for murder the testimony of a ballistic expert, where the record showed that it was his 191st appearance on the stand as such expert and his testimony was supplemented by photographic exhibits showing a similarity between the bullet which caused the [***5] death and test bullets by the automatic taken from the bank years before, was admissible.The admission of evidence was not error because prematurely admitted, the order of proof resting largely within the discretion of the trial court.The evidence was not objectionable because subsequent to the testimony identifying the automatic from which the bullets were fired direct evidence was adduced connecting defendant with the weapon and testimony showing defendant's access to and opportunity to be in possession of the automatic prior to the introduction of the testimony."