The airline and homeland security insist they are in original manufactures carton.
well I doubt that..
I took the batteries out of a 3 D cell Maglite flashlite. and i put as many 9 mm rounds in it as i could and put it in my checked luggage.
JFK's TSA opened my bag and emptied the flashlite to see what was inside and they left all the ammo spilled inside the suitcase!!
the xray goes through the aluminum flashlite!!!
I put the batteries back in for the return trip and the STI xray machine operator told me that I was supposed to remove the batteries from the flashlite from now on. and he showed me the xray image. i could clearly see the batteries in the flashlite.
any way. if you declare them in the DR they will be taken...for sure.
I dont know how you are supposed to declare them before departure.
You can legally put ammo in checked luggage....there are some restriction though....quantity basically.
bad bad bob