Here is the response I got from Matson
Aloha,
Proper shipping description should read: UN0012, Cartridges, Small Arms, 1.4S, PGII.
Cartridges, small arms and Cartridges power devices that may be shipped as a Limited Quantity or ORM-D material are as follows:
· §173.63 Ammunition must be packed in inside boxes, or in partitions which fit snugly in the outside packaging, or in metal clips;
· Inside boxes, partitions or metal clips must be packed in securely-closed outside packaging’s;
· Maximum gross weight is limited to 30 kg (66 lbs) per package;
· 22 caliber rim-fire cartridges may be packaged loose in strong outside packaging’s;
Please feel free to contact us if you should have any further questions.
Thank you!
Lummy Quinn
Matson Navigation
Customer Service
1-888-562-8766
Fax 888-263-0582
www.matson.com