I don't think they are military surplus - I'll check to see if the primers are sealed or crimped. [UPDATE: THEY ARE NOT SEALED OR CRIMPED] A friend of mine who worked for Olin got them thru the Western Club (employee purchase program). He sold me his rifle and threw a case of the ammo in. I shot some over the years then started reloading and the stuff sat in my ammo locker for a long time. I was told that they were rounds made for the US Govt. LEOs (snipers?). That is why they were in the plain box. I've still got a BAR in 300WM, but it is only a hunting rifle, and I wouldn't use match ammo for hunting black timber. No real need for this stuff anymore.
As for shipping ammo, I've followed this in the past:
How to Ship Ammunition or Ammo
Usually just pull one of the stickers off one of the Cabela's boxes or CMP crates I have laying around in the basement.
BTW - The 300WM brass is all sold.
PRICE DROP - $30 PER BOX.