I was at a Cabela's one day and the primer counter was a mess. There were individual primers spilled all over the shelves and boxes open with 100 count sleeves in piles but out of any type of order. When I saw all of the individual primers laying and rolling around the shelves and the ones that had fallen on the floor, I decided to get away fast and then go tell one of the clerks. When I finally was able to speak to an employee, I urged him to be wary of the dangers at hand, especially since there were about 100 bottles of powder right next to the primers.
So, what do you think happened?? Go ahead, guess......
He swept up as many as he could with his hands and just randomly put them in sleeves. I'm sure that Rem primers were mixed with CCI etc and that small rifles were mixed with small pistol mags, etc.
Lesson learned:
Never buy primers unless it's from an UNOPENED pack of 1000!!! If it looks like someone had opened it, don't buy em.