Touching primers with fingers?

[Jack]

I've done some informal experiments also, regarding what will kill a primer, and how long it takes.
For example, I soaked some primers in WD-40. Took about 3 days with them fully inundated to kill the primers. In water, primers fully under water fired after a week.
I believe Rocky's right (no surprise there) about the primers being very contamination resistant until the seal is cracked when they're seated.
Myself, I usually avoid handling them if I can. I dump primers into the tray of a Lee priming tool without touching them, etc.
But I don't make a religion out of not touching them.