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12-gauge slug vs .410 slug—which one stays on course after hitting a wall? This shotgun wall penetration test compares what happens after each slug passes through drywall, an air gap, and plywood. The difference could change how you think about shotgun ammo for home defense. I also explain why 12-gauge overpenetration matters and why I prefer buckshot for home defense. Watch the trajectory closely—the result tells the whole story.
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