My first question was why was the cop poking around in the glove compartment? The only reasons I can think of are (a) the cop saw something that gave him probable cause, (b) the driver voluntarily consented to the search, (c) the driver responded in the affirmative when the officer asked if there were weapons in the car.
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From linked story
I called the prosecutor to see what we could do on this, and the prosecutor told me that they were waiting for ballistics," Nappen said incredulously. "And I’m thinking, ‘What? Ballistics on a flintlock?'"
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Please excuse my ignorance, but Do smooth bore handguns have ballistic signatures?
Also, would firing an antique handgun that hasn't been fired in over 200 years reduce the value of the artifact?