UPS Requirements:
1. Pack ammo within a sturdy cardboard box, gross weight limit of 66 pounds.
2. Print ORM-D label, cut out and tape to a least one side of box.
3. Take package to a UPS Customer Center only - NOT at Drop-Off Box, The UPS Store, Mail Boxes etc., Sonic.
Per UPS:
UPS accepts domestic ground shipments of ammunition that have been classified by the shipper as "Cartridges, small arms", "ORM-D",Other Regulated Material). The package must be properly marked according to the requirements of Title 49 of the Code of Federal Regulations,49 CFR). Contact the Hazardous Material Support Center at 1-800-554-9964 for details on regulatory information.