Re: how old are these primers
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EddieNFL</div><div class="ubbcode-body">Properly stored shelf life is indefinite.
I remember the box. Seventies sounds right. </div></div>
Pretty much. Primers, if stored right, can last a long long time. I always store mine in waterproof ammo cans. I never know when I'll pick up the next project, so if it's awhile, they can get affected by humidity.