I only reload 38's so far, and I find it pretty easy. I started with a Lee Hand Press; it works well enough, but I should have bought a bench press to begin with. I have the Lee reloader press, whatever the base one is; and it's fine for at least 38's.
Once nice thing about revolver rounds is not having to trim. I don't know about 40, but that is likely the only extra step. Oh, the crimps are different, but that is a minor change.
Now, when I look at reloading bottlenecked rifle rounds, I get all confused. More steps, and even then, the brass is good only for x number of reloads--unless if it's good brass and low(er) power rounds. Rifles run lots more pressure, so trimming is encountered more often. Not saying it isn't worthwhile, just that it seems like a step up and beyond straight-walled cases.
Just do lots of reading, and I think you'll be all set. And don't take guesses: find answers. These are explosive devices, and assumptions might hurt more than just your ego.