Where I am folks ask me to make them some of the strangest stuff, I had to do a lot of research on the 11.7x51R cartridge. You can buy them at one place that I know of but at $69per 20 that gets a bit ridiculous.
It wasn't till recently I found out about the 9mm Fed rimmed cartridge, they haven't made that for a better part of 20yrs. And when you can find it (if your lucky) it can go as high as $70+ per box of 50.
So every week is an adventure around here wondering what people will ask for next.