That's a great article even if the results were a little inconclusive due to unanticipated uncontrolled factors (bullet length). I'm just happy to see someone showing how the worlds of firearms and hobbyist hacking can fit together.
It's unfortunate that everything related to firearms is now viewed as political. There are just so many interesting things unique to thos subject matter that inquisitive and mechanically inclined people, like those on HN, are missing out on.