Casting is cheap to do and has a short learning curve. You’ll start getting creative in sourcing lead. You can get started for less than a hundred bucks.
If you want to start on the cheap, get a Lee precision 10 lb bottom pour pot and some of their two cavity mold in the Caliber you shoot. As you ger experience, you will find yourself looking at better/bigger furnaces or at ways to better control the temp on your Lee. You will also find yourself looking ar more expensive/higher quality molds like Noe, M&P, Accurate and even the old Hensley and Gibbs 10 cavity ones.