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Slide 4
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7000 - .357 SMOOTH BORE BARREL - Ideal Products Inc.
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File:The 120mm smooth bore tank gun, looking down the barrel. MOD 45146593.jpg - Wikimedia Commons
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Slug Country Debates: Rifled Barrel Versus Smooth Bore - River Valley Arms & Ammo
Slug Country Debates: Rifled Barrel Versus Smooth Bore - River Valley Arms & Ammo
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