I read you said it's shaped like a bullet, but you didn't say it is a bullet. When I do drill a bullet, I do it in my pen vise. I only use hollow points. I stick the bullet in the vise, I use a small bit and drill into the hollow point through to the back side. Then I flip the bullet, drill the back side larger so I can melt out the lead. Is that as good as the other guys...I can't see any difference. The back side looks sloppy, but it's hidden in the pen, and the ink comes out straight through the center. For a wood one or other home made nib...hmmm, that's different indeed. The most important part though is the same, and that's the exit hole. That's the hole that must be in the center. Inside the pen if it's a bit off, isn't so big a deal unless you have x-ray eyes. We with lesser tools just have to make due. If the inside is way off though, then you'll turn the nib open when you spin it, if you spin it too thin. With a bullet, you don't spin the outside of the nib with a chisel, so no worries. I think an alternate material nib, I'd have no choice but to figure out a way to fit my drill chuck into my lathe and use a step drill from the back side, and one of Rick H's wooden chucks to hold the wood or whatever the material is. His chuck idea is darn nifty and on my to do soon list.
