Montague v. State, 2016 WL 112378 (Tex. App. 2016)
in this case the expert did not link the casings & bullets found at the crime scene to a specific weapon (because no gun was submitted to him for analysis), he merely testified that they were fired from the same weapon
This court noted that the expert’s past experience testifying in courts cuts in favor of this expert’s current testimony being admissible.