There's no special requirement needing an FFL (Class 06-Mfg'r of Small Arms Ammunition) if the ammo you ship is your reloads ,,or not.
Shipping is just that.
The Manufacturers License FFL-06 gets you in line to pay Federal Excise Tax on Ammunition. It's not needed to remanufacture (reload) ammunition if it is NOT done as a for-profit business.
Small Arms ammo is rifle/handgun cartridge 50cal and under (Bore diameter)
Shotshell 8ga and smaller.
There are packaging requirements, simply that the stuff is securely packaged in a new cardboard box and marked with the (new) symbol.
Here's the UPS website info.
I've shipped it for yrs being and 01FFL,,an 03FFL and a Nothing..
Just follow the simple rules.
Once in a while you get a Counter Manager or Clerk that freaks out and denys your package.
Show them their own regs and it gets done.
They got Ground Service from a Hub.
I did have a Clerk try and send a shipment of Handgun AMMO NextDay Air because Handguns must go NextDay Air.
It was surprising how long it took them to understand the difference in the two commoditys even with their own rules printed out in front of them.
But don't back down.
It's a simple process.
https://www.ups.com/us/en/support/s...s-materials-guide/how-to-ship-ammunition.page