I go from being "correct" to being denigrated as a know it all defying logic that's been around longer than I have. Whatever.

What I do know is that there aren't any favors to the OP or anyone else wanting to get started making their own bullets if 100 year old bullschidt gets propped up as any kind of wisdom or even a place to start.

Having been in the same shoes as the OP, anyone telling you "gas cutting" is causing all your leading and you need a "gas check" to keep hot gasses from turning your bore into a solder bar isn't a help to anyone.

You stated as much yourself and thanks for the illustration.