Shelf Life on Large Pistol Primers left out on loading bench

[Jim Watson]

I once bought a 1,000 box of Federal #100 small pistol primers from a shooting buddy.
He had to leave for a Dr’s appointment so he set them on a flower planter on his front porch. Along came a thunderstorm that drenched them!

I took them home and opened all the trays after draining off the water. I left them on the deep freezer in a warm storage room for about a week to dry out.
Every one popped normal!

Similar experience. Fedups somehow managed to wet a case of primers for delivery here. I thought about what I had read on disabling primers. So I opened a flat and left it on the bench for a few days, then loaded them. They all fired, so I just got into a routine of open some up and leave them to air dry before loading. Then open some more. All 5000 fired.

 

[Barmcd]

I've used primers I found on the floor that were probably there for months without a problem.

I thought I was the only one to do that!

 

[Palladan44]

Should be fine. I’ve shot (and still use) CCI LRP from the 1970s that were stored in an Utah garage that varied between 22ish F in the winter and 108F in the summer. Haven’t had one yet that didn’t pop.

This is about where my experience is at^^^ not quite those extremes though.

In short, the primers we all possess today would all go bang long after we are gone.