I'll post a report when I try it......the mold will have no sprue plate, plan on cutting the sprue off with a band saw.
This is not to take the place of lead bullets.....or any other purpose than just "because", I just want to see how it will work out.
It won't work. Brass will shrink too much, you'll have way undersized bullets. I also doubt it will flow well enough to fill out lube grooves.
Band saw? I fail to see how you could possibly cut the base square and smooth enough to get a usable bullet.
But it sounds like you're determined to do this, so have fun.