Fore bare minimum, you don't even need the kit. I have a few presses, and a automatic powder dispenser that, once the powder is dispensed, I then check on a separate balance scale. Not needed though, but it does speed up the weighing of powder charges.
To start as simply as possible, you need a press, dies, shell holder, powder scale, something to clean your fired brass with, lube, loading manuals/instruction books, and components (brass, primers, powder, bullets).
I have a Hornady decapping die to remove the primer- first step is deprime all fired brass, then I sonic clean and dry (I have an annealing machine on the way that will go into the process after the sonic clean, but it's not here yet). Then lube and resize (need dies for this), then clean again in a vibratory cleaner. Then prime, add powder, then seat bullet (need dies for this).
This could minimally be accomplished with the following:
- RCBS Rockchucker press
- RCBS #3 shell holder (7mm-08)
- RCBS #10 shell holder (.223 Rem)
- Die set of your choosing for 7mm-08 (2 die set with at least a FL sizing/decapping die and seating die- neck size die optional)
- Die set of your choosing for .223 Rem (2 die set with at least a FL sizing/decapping die and seating die- neck size die optional)
- Case lube (I like the Hornady One-Shot spray)
- Reloading tray (to hold your cases upright while you put powder in them)
- Brass cleaning device (vibratory are fairly cheap) and media (walnut, corn cobb, etc.)
- Hand priming tool (I have the RCBS universal and it works well for .243win up to .300wm for me)
- Powder funnel
- Balance scale
- Reloading manuals and instruction books!!!
- Components (brass, powder, primers, bullets)
You could use a simple setup of measuring spoons to scoop powder into the balance scale tray...slow, but it works. As I stated before, I also have a dedicated decapping die for both small and large rifle primers- I run my fired brass through this when I get home from the range and then clean it. Keeps dirt/residue from getting into my sizing dies- and I've removed the decapping stem from the sizing dies since I don't need it with the other dedicated decapping dies.
Handloading is a rabbit hole- you can spend a lot and have a fairly automated setup with specific tools for each job, or you can spend less and have a more general setup, but either work to produce consistent rounds. Have fun!