Since you already have your brass, just looked at Cabelas current shooting/reloading catalog. And, as I said, you might want to stick to an occasional box of factory ammo like you are currently doing.
Components, powder, primers, bullets, etc. $40.00
That's basically 5 boxes of shells, or $8.00 a box. Pretty cheap eh?
Now, in order to load these five boxes you need a scale($72), RCBS press(their cheapest listed is $120), a set of .243 dies($27) and a shell holder($7)for a total of $225.
Amortize that into your first 5 boxes and you per box cost is $53 a box. Moral is that you can buy a goodly number of Remington factory ammo for $265. Loading is great fun, and if you are going to expand into other catridges and stay with it as a hobby for years to come, then go for it. But, if you are just trying to save a little money for your immediate future, you can see that's not going to happen. Good luck.