I always thought that primers would last indefinitely and just found out otherwise. A short while ago I was out trying to buy primers and went to a gun shop that was just going out of business. He told me he had one "old box" of Remington small pistol primers left. I asked him how old they were and he said he didn't know, but I bought them anyway. I just used them to load 100 rounds of 9mm and had two failures to fire. I tried second strikes on both cartridges. It certainly wasn't the fault of the gun which is a brand new CZ 75B.
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