Lots come from Nevada and New mexico
Most come from Mexico, it’s way cheaper...
So easy to make your own and most fuses and such can be ordered off the internet along with a trip to your local gun store for your powder for reloading endeavors. Those spent CO2 cartridges for you airsoft guns come in real handy too. Make sure you get the right fuses though. They got some fast stuff that burns about 1 second per foot, don’t want to use that stuff. Just in case your looking for next year. https://cannonfuse.com/