When I first got into reloading I bought a Lee Loader in 44 Mag and 30-06. I loaded in the bottom floor of two story Apartment Complex. Of course I kept wierd hours on the weekends.
I would reload very late into the night, using a rawhide mallet to beat the cases in and out of the Lee Loader die.
Later I found that my friend upstairs could hear the tapping of the mallet, he would get up a number of times and roam the apartment trying to figure what was making the noise. It would always stop before he located the source.
Kept him up very late.
I had no idea.