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Renewed shot in original direction: periodic ballistic registration

It turns out that fellow DC area blogger Doug Turnbull (“Beauty of Gray”) has been addressing some of the same gun-related issues I have, and originally adopted many of the positions I independently developed over the last week or so. But in a post titled “Final shot, in the other direction [1],” he drops support for ballistic fingerprinting, having been convinced of some practical difficulties:

Gun barrel dimensions are accurate to at best 0.001 inches and most are far less precise. The markings are caused by flaws that are 20-100x smaller.

So, one could easily remove 2-5x as much material as would be required to change the markings without even taking a very good gun out of “as good as new” condition.

This is true, and appears to clinch the case against “ballistic fingerprinting.” Indeed, I’ll concede that “fingerprinting” has always been too strong a word for the idea; let’s rechristen it “ballistic registration.” Still, I think Mr. Turnbull gave up a little too soon on the concept. Here’s why:

And with this, I’ll likely move on to other topics for a while myself.