I have three or four bricks of those red and white cci primers. Stored in the garage but in ammo cans. No issues at all.
My father had some Remington srp that were at least 40 yrs old i loaded 9mm pistol practice ammo with and occasionally had a few not fire, after i got through them ive never had a ftf with new spp.If you put the primer on the concrete floor and smack it with a hammer do not have your bare knees on the floor.
It will crater the concrete and send pieces of it out from under the hammer head.
I know that was suggested.
And it is pretty loud.
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