graphite bullet molds

[camerl2009]

ok so i was sitting here and a look over and my ingot mold(graphite for copper , silver, and so on)

and was thinking would graphite make good mold blocks
if done right it could cast zinc,kirksite,and copper

now i was thinking for a paper patch mold but
for newer guns it can be the size one wants

[docone31]

Graphite molds are sacrificial.
In other words, each time you use it, it gets consumed.
That keeps the O2 levels down while the metal is liquid.