That's pretty bad-A$$.
I'm wondering if a guy could design one similar to the philips head but instead of the screw-driver end
you might make your mold to spiral to a point. (spiral like a drill bit to a point) With the spiral being
the same twist as your rifling.
That might make for a more accurate bullet.
Something else that comes to mind is a cast bullet with a small fist on the end of the bullet itself.
Make some cast bullets with some punch to them.
HollowPoint