Modular Reloading Blocks

When I reload for hunting, I will reload just enough rounds needed for the trip. So for these instances I want a reloading block that holds of no more than 25 rounds. When I reload for competition, I will reload up to 200 rounds at a time. I have a very specific process, so I want to be able to set up my reloading block so that I can move the components between the different stages of the reloading process.

Problem is that I need a lot of reloading blocks, and they take up a lot of space when not in use. My solution is this - reloading blocks that can be combined. Small 5x3mm round earth magnets fits into the printed holes, and keep the reloading block together during the reloading process - and they take up very little space when staked, when not in use.