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  1. The Ammo & Reloading Forum
    I'm building a CAD model of a 9mm barrel. On https://en.wikipedia.org/wiki/9%C3%9719mm_Parabellum it says that a 9mm bullet is 9.01mm diameter in a table, 9.03mm diameter in the image, and bellow when talking about rifling it says: I don't understand these data, if the bullet is 9.03mm...
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