Basically I went through the steps to reload the brass without powder or primer. I then cut the brass in half, and I added epoxy to hold keep the bullet in place. Then I drilled out the bullet so it functioned as the nib. All was done using a collet chuck. I tried drilling the the bullet both ways, before insertion and after it was epoxied in place. Both methods are not perfect, there will be rejects from them getting marred or just being stubborn.
The primer end also has to be drilled so the tube will extend up so the finial can be pressed in with the clip. I made custom sized hardwood collets that fit in a 3/4" collet to hold the primer end. Actually I believe I drilled the primer end out before cutting in half, some will get screwed up.