One time in my reloading "path" I purchased several items of reloading "stuff" and included in it was a box of 357 primed, sized and trimmed brass. It was nice and shiny and the primers looked just fine.
So, I loaded 'em with a mid-range load of powder and lead bullets. When I went to the range about 30% of the bullets would shoot, and I had two (yes 2) hang-fires. Now, that was my first (and last) experience with hang-fires. I can only assume that somehow the primers either gathered some moisture, or flat out got wet and then dried out.
I pulled the bullets that did not fire, decamped 'em (Make sure you are wearing safety glasses when you do this….and in addition I usually put a small piece of plywood between me and the brass. Probably over caution….but hey!!) The brass was fine and I'm sure I'm still shooting some of it today.
So, what I'm saying is I would decap 'em and replace the primers with what I know are good ones.
Dave
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