I have a sneaking suspicion that some people still shoot with war-issue .303.

..got his hands on military grade rounds (7.62x53R) which were really cheap and he couldnt hesitate and bought a lot of them.. back in the mid 80s. He is still using them and havent had any problems with them.. The elks die like they used to do back then. I guess that he will be using them well in to 2010s.

 I am not expert on these matters but I think that if you keep them in dry and dark place with rather stable temperature, there shouldnt be any problems. If the modern rounds couldnt tolerate such we wouldnt see much of firefights in most of the 3rd world wars, in my opinion. Of course safety is an issue, but the worst I can imagine is that the round doesnt fire or the gunpowder isnt fully consumed..neither is serious although annoying. But in any case, my father hasnt had such problems. Someone can correct me if I am wrong, but this is what I think.

.. during the conscription (1998-1999) we regularly shot ammunition made in 80´s and 70´s if my memory serves. I got a feeling that I shot ammunition that was made in the same year and in the month when I was born..