I've never done a badger as I'm too cheap to buy the knob, but here's a pic of the jig I made to do my own. I'm using an annular cutter to speed up the machine time......and it works grand. I have to cut the stud down a bit and run a die (5/16) down it.
[Linked Image]
[Linked Image]
[Linked Image]

Originally Posted by BrentD

I would not buy something that runs on any kind of primer given the possibility of primer shortages and even regulations. In fact, why not buy a flintlock? Really. Rocks aren't going away anytime soon.