I second that!! not nearly as complicated as some would like to implyBeen casting boolits for over 40 years.
My advice; don't try to make it rocket science, because it's not,
I'm in SW okc, it you want some F to F instruction give me a shout
and go ahead with powder coating - its a piece of cake and keeps you from handling the lead
lead oxidizes at temps WAY above melting so "fumes" are not as much a hazard as some think
I use an old 4qt stainless steel sauce pan on a cheap walmart electric hotplate to melt my rough material
I have never mixed stuff in my lead but do separate out [skim off] the zinc