CTs argue that the bad guys and/or bad gals had to make sure the bullet had enough markings on it to be traceable to patsy Oswald's short-rifle.
(Excellent post, btw.)
Isn't the issue more fundamental? If the gunman were in the Sixth Floor sniper's test, as Dan hypothesizes, then (1) why would he not have simply used Oswald's rifle or, if it were deemed unsuitable, (2) why would he not have used a finely tuned 6.5 Carcano (or possibly a 6.5 sabot in a higher-quality gun)? This was a Presidential assassination with the resources of LBJ and Byrd, for crying out loud. Hence, why would there have been any need to plant or fabricate ANYTHING AT ALL?
I also love Dan's hypothesis that this was all highly compartmentalized, with NO POSSIBILITY of being traced to LBJ or Byrd. But his hypothesized gunman is
Mac Wallace, who not only had close connections to LBJ but also a previous conviction for first-degree murder! Had Wallace been detained leaving the TSBD, the jig was up. Fortunately, both Wallace AND the patsy exited the building (and even more fortunately, ONLY the patsy was observed as he did so!).
Why does anyone keep pretending this nuttiness is worthy of discussion? If I weren't having so much fun amusing myself - I am my own best audience, I'll cheerfully admit - why would anyone keep humoring this goofy theory? Why would Dan even keep hammering away as though this were going somewhere? Hopefully you're all just having as much fun as I am. I actually think it's a useful lesson in what Conspiracy Thinking looks like.