If I took a bullet out of its casing, can anyone tell if it was fired or not? - Quora

By A Mystery Man Writer

Answer (1 of 10): Most all gun barrels have rifling that makes grooves on the side of the bullet. Smooth bore shotguns will not leave such groves. The lead slugs usually fired out of shotguns will swell slightly when the powder behind them pushes them out the barrel. If a sabot round is fired the

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