I've reloaded for several decades, and I've found the secret to accuracy and cost is the bullet.
For example, depending on how much you like to phutz with stuff, range scrounged brass can be tumbled, weighed by lots, trimmed, have the necks cut concentrically, have the primer pockets re-punched, etc. It's your time to waste.
Things like powder and primers can be purchased in bulk and in lots. That's about as cheap as you can get it. Same way for things like varmint bullets.
Buy in bulk.
But what about practicing? I cast my own bullets out of linotype. I had found a printer going out of business, but I salvaged every wheel weight I could find, plus pure lead from my telephone company friends, and ingot bars of tin and solder. I made my own linotype.
When I cast, I cast all day. I used multi-ganger molds, culled like crazy, and became quite popular amongst my friends.
There were periods of years where I spent nothing on shooting. Nothing.