Started out in the late 80s with a Lyman single stage press loading 9mm. I figured a lot out using that press and I still have it and use it. Since then I’ve acquired 3 Hornaday Projector presses of which 2 are set up with 10mm and 45acp. It’s usually what I shoot but I do shoot 9mm, 38/357, 41mag, 44mag, 380, 22, 5.56/223, 308/7.62. Lots of good powders for all of those……use what you like. I’m frequently researching reloading and things that make it easier.