Re: how much does it cost to hand load properly?
It depends upon what you mean by "properly." A long time ago, I bought a Lee kit similar to the one available
here. Nowadays, it costs less than $120. A set of dies for .338 Norma Magnum are going to run you from about $60 to $90 more, as seen
here. With this general setup and nothing more, I hand-loaded many cartridges for a 7mm Magnum sporter I owned. I cleaned the cases one by one with fine steel wool while spinning them with my drill using the shell trimming unit that comes with the Lee kit. The cartridges were safe, and in my rifle, consistently shot well under 1 MOA. The downside was that the process was slow, and a more refined technique and better equipment might have produced ammunition that was even more accurate. I did not shoot a high volume of cartridges with that rifle, however, and the accuracy level I achieved was entirely adequate for the hunting applications to which that rifle was dedicated.
After buying the Lee kit, I got the bug for service rifle competition. I quickly found that I personally did not have the time to load enough cartridges for practice and competition using the old system. So I bought a Dillon 550. With the basic Lee dies in .223 Rem., a case tumbler, and a basic set of calipers, that setup cost a little over $500 back in the day. After a bit of practice, I started churning out hundreds of cartridges at a time, after having first bulk-cleaned them in the tumbler. All of them shot well under 1 MOA in my service rifle, including those loaded for practice with 55 grain bulk bullets. I figured that I reached a financial break-even point (cost of hand-loads vs. factory ammo) within about 9 months at the level I was shooting then. Of course, that calculation did not count the value of the time I spent reloading.
What I really liked about the progressive press system, though, was that it allowed me to spend much more time behind the trigger.
You can read the excellent posts and stickies on this site about how to do much more in hand-loading than what I do. Some of takes much more equipment than what I use, and involves more time-consuming methods and techniques. Undoubtedly those methods and techniques can squeeze the utmost accuracy out of any given cartridge - rifle combination.
So we're back to how you define "properly" hand-loading rifle cartridges. If "properly" means safe cartridges that achieve decent accuracy, you do not need more than $300 of equipment, and may need less. If "properly" means having the absolutely most accurate cartridge possible, or if you want to speed up the process to achieve a much higher volume of hand-loaded cartridges, you will have to spend much more than $300. That's a decision only you can make.