MOA or Mil... nether has really anything to do with yards or meters for that matter.
https://search.yahoo.com/yhs/search?p=Mo...p;hsimp=yhs-002
I wouldn't put my gun in the freezer but you could drop your ammo in a plastic baggie and drop into ice water which will get it close to 32F if that is what you feel will be your temps while hunting.
As far as choreographing ammo the ambient temps are not that important except the ammo itself is colder.
