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Old September 11, 2018, 07:09 AM   #23
Senior Member
Join Date: January 2, 2005
Location: Where the deer and the antelope roam.
Posts: 2,849
Ten years ago, the last time I was stationed out here in Okinawa we ran into a bad batch of 5.56 that was blowing primers out. The only way we discovered that primers were being blown out of the cases was that the M-4's were jamming after 2 or 3 loose primers got behind the sears. I have absolutely no way to prove that heat or humidity caused this. It was likely a bad lot of ammo. This was one occurrence in two years and close to 300,000 rounds (I did not personally shoot all 300,000. I rotated through two deep reconnaissance platoons that did a TON of shooting).
That is a brass problem, not a humidity problem. All US military ammo is sealed with lacquer, most civilian ammo is not.
Retired Law Enforcement
U. S. Army Veteran
My rifle and pistol are tools, I am the weapon.
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