Cole, I grew up reloading with my dad, but haven't reloaded in years. I saw this photo in
@tarbe recent post and it brought back memories. Home made cartridge holders. I can remember my dad and I taking a piece of 2x8 or 2x10 and measuring and drawing out the grid lines. My dad then set me up at the drill press and I proceeded to drill a bunch of holes through the board. I was probably 7 or 8 years old. I think we made ours with 5 holes per row. The last step is to cut a thin piece of plywood and glue or nail to the bottom.
One other suggestion, you need a good, sturdy, heavy reloading bench. Keep it clutter free. The only thing you want on it is whatever you are reloading that session. Good lighting above the bench too.