If you just want to make blasting ammo and lots of it, I would look at a Lee 1000 setup with dies (should be complete from the factory). This will do all the reloading steps and load very quickly.
Not the more accurate way but it will make safe functional and decently accurate ammo. I would also lead you towards 55gr FMJ's like from Hornady, CCI 450 primers, Win cases, WCC 735 or H335 (dirt cheap, flows great through the powder measure and shoots very well in AR's).
If accuracy is what you want and you are willing to take more time to reload, you will need a single stage press and kit. I recommend the new Lee 50th anniversary kit with Lee collet neck die set. From there, you can add different/better items as your needs progress.
But it is all there to make great ammo that you can tune to your rifle.
Jerry