![]() ![]() ![]() Since shotguns have no lands-and-grooves, their projectiles cannot be positively matched to those found at the scene or inside a body.Ī shotgun cartridge contains pellets, gunpowder, and a wad that separates the pellets from the gunpowder. These markings allow examiners to test-fire weapons and compare test-fired bullets to those discovered in bodies. Lands-and-grooves cause specific identifying features (rifling) on projectiles as they pass along the barrel. Unlike handguns and rifles which have lands-and-grooves cut on the inside of their barrels, shotguns have a smooth bore.
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