What 'Project Gunwalker' says about extent of gun trafficking to Mexico

If the sale of 359 firearms in a month can be connected with the bloodiest month in half a decade, what does that say about the supposed (and supposedly vast) "iron river" of guns flowing from the U.S. into Mexico? Remember this claim (pdf file) from the Brady Campaign?

An estimated 2,000 weapons per day are flowing from the U.S. into Mexico

359 firearms could hardly be statistically significant, if conventional "wisdom" is to be believed. [More]

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