H Wally said pretty much what had to be said.
Handloading can cost you a fortune if you go the Cadillac route. Some of us prefer the Model T route, which is not necessarily bad.
My reloading press is a cast-aluminum one (black) from C-H. If you tell people that you have an alkuminum C-H press and that it is black, they will call you a liar because everybody knows that C-H uses RED. I bought it, new, in 1965 and it still works. Lee has an aluminum press right now that is about 35 bucks. Add 30 more for a set of dies for your milsurp, or 40 if it's one of the strange ones. Lee has dies for the common ones (6.5x55, .303, .308, .39-'06 and a couple more) starting at 20 bucks WITH a shellholder that the otyher guys charge you 8 bucks for. They aren't pretty but they WORK. Loading blocks are worth maybe $8 and that sets you up to do 100 rounds at a crack.
One thing that you absolutely NEED is a scale which is accurate enough to do the job. There are several on the market, ranging from $250 down to about $25. I am using an RCBS 5-0-5 which is made by the same guys (Ohaus) who make lab balances.... but you don;t need that. You can get away with a little Lee for a quarter of the money. The Lee operates a bit differently from most scales, but it makes sense when you get used to it. It is sensitive enough to show the difference between a sheet of fresh notepaper and the same one after you have put WRITING on it. I think that's sensitive enough.
And you can really speed things up with a powder measure; they are anywhere from about 30 bucks, up.
After that, primers are worth about $3.50 a hundred, bullets run about $28 - $38 a hundred and a pound of powder (from which you will get 150 to 200 shots) is about $30.
But that's for shooting jacketed bullets. If price REALLY concerns you, you can cast your own slugs from wheelweights, use the same equipment and primers, use a different powder and get some gas checks ($32 a thousand). You need a mould ($30) for your rifle, a gas-check seater/bullet sizer and lube ($24 for the set). You can actually shoot a .303, once you know what you're doing (lotsa guys here will help) for two bits a shot, which is a fifth of the price of factory ammo, a FIFTEENTH of the price of fresh Swedish ammo for some rifles. And if you get deeper into it, you can add more calibres.
Shells for my Martini-Henry cost $10 apiece to buy.... if you can find them. I load my own for a quarter. Same with .43 Mauser. Shells are worth $4 a pop these days.... but they cost about 20 cents to reload...... anbd you can have a LOT of fun with an 1870s .43 Mauser that was new when the Kaiser was a pup and Prince Bismarck was running Europe.
Not just that, but you will learn techniques that make your rifle shoot like an AI, just so long as you are using your roll-your-owns.
It's worth investigating.
Have fun!