First…..a Welcome from North Central Wyoming!
Then, don't over complicate it! Or, better yet……don't let the unbelievable amount of internet gurus and information overwhelm you.
First think basic……read! Get an old fashion Lyman Metallic Cartridge Reloading manual. Learn the terminology, and the reloading basics.
This is as basic as it gets……you reuse the case, replacing the components that were used, primer, powder, and bullet.
The case will swell to the chamber dimensions when fired. You must first reduce the case size in the sizing die. During this step, the spent primer is expelled. Next step……replace burned powder. The amount and type will given for your particular cartridge in the aforementioned manual. Next step…..seat a bullet into the case. The manual will also give the recommended cartridge/bullet overall length. You have just reloaded a cartridge!
Yes, that's a bit simplistic……but, those are the fundamentals which can provide you with a shootable cartridge. You can punch paper, shoot cans, or even hunt with that. How deeply you want to get involved solely depends upon, your ultimate desires, your time and money you can put into hand loading!
Some of us started before the internet, on a "shoestring" budget, I started with a $9.99 Lee Loader ( look it up on the Lee website) for a .308 Win., a plastic mallet, bullets/primers/powder. I shot a lot of rounds through my little .308 using my Lee Loader.
Obviously, you're going to need a bit more specialized equipment for your 280 AI. This was my attempt to suggest that it can be kept very simple ……yet very functional! memtb
Heres a photo of a LeeLoader for a 30-30 Winchester