The problem here is, it's not all that easy to get "pure" lead let alone pure lead that's cheap.... Wheel weights are available but are alloyed so are better for somethingother than ML balls...

I've been casting since the late 60's and i haven't had to "break in" a mould yet... Mostly what's considered a break in is really just burning off all the oil ect.. that's on it to prevent rust.

Lee pots are cheap, but haven't held up for me... I'd use an heavy pot on a stove and a dipper to get started... If you like it then move on up to more expensive equipment...

Here's a good tip.... What ever you use to melt lead in, do NOT empty it after your done casting. Leave it at least 1/3 full.

It really helps if you can find someone to show you the ropes the first time around.... It's so much easier when you do it right and get past the learning curve sooner by being shown..

DM