No matter how you do it, it won't be cheaper than a .17 HMR. By the time you figure in components and dies and the work involved, even divided by 1000 rds, the HMR is less expensive. Trying to fill that gap between the HMR and a Fireball is harder than you think, as small cases are not only finicky, but hard to accommodate to a larger based receiver. I'm not trying to kick the props out from under you, but I've been there, done that, and it was not by any means "cheap" but I did get an education. Knowledge has a price.