I don't even know what a rockchucker is, yet I am a reloader. I've been using my Lee three hole press for about 15 years. I only do pistol rounds and I use tire weights for my bullets. I can't imagine a better machine. The primer setup does leave a little to be desired. Therefore, I recently got the Lee Auto Prime. So I had to get the shell holder with it. Auto Prime and shell holder for less than 50 bucks. It works great but it means that I have to run the shells through twice to de-cap first. I keep it all lubed and clean and after 15 years, it works great. Lee stuff is great.