In my dream there were 7 fat cartridges, and 7 skinny cartridges. Oops, wrong dream.

My dream was somewhat like that, but my vault/man cave/indoor range had a hole in the basement wall connected by 50 feet of 2 foot diameter concrete drainage pipe. This was pipe buried through the yard to a remote man hole. Inside the man hole was a target system and bullet collection system. Also in the man hole was an automatic bullet molding machine, initiated by the weight of scrap introduced into the smelting pot by the bullet reclamation system.
In the top of the connecting pipe was a target trolly fitted with a small cup affair. Every time the trolly returned to the shooting station, it also brought along any bullets that had been produced. When the trolly came all the way back, the bullets were dumped into a waiting reloading machine. The target was then digitally scanned and stored on a computer with the load data.
The shredded target was then reduced to pulp in a slurry, to which a paper making machine was attached. Cut paper exited the machine and was fed into a computer printer.
Everything was going fine until I ran out of primers !! Then I woke up.