If you have very little going on in your life, casting is a great way to fill empty time.
Casting is time consuming. Very time consuming. You have to find lead. Going to scrap yards to find pure lead, sorting through wheel weights to get rid of the zinc and steel ones, finding a source for tin, these all take time.
Then you have to melt the stuff into ingots.
If you buy premixed lead, it is not cheap, and shipping is expensive.
Then, you get to cast bullets. This is not something you can just start and stop in five minutes. Expect to spend a day on your first batch.
Then you have to size and lube the things.
I only cast Minie balls and rifle bullets. No one around here makes those.
I have been doing business with a caster since the late 80's. He is a three hour drive away, so I buy bullets in bulk. His price is good enough that I would rather drive down there, buy handgun bullets , than spend all the time and effort casting.