I lied. It was 8 years ago. Went to look at the original post it was only 65,000+/-.
It's a small plastic trash can and was getting so heavy I couldn't move ir with out damaging it. The contents weighed 33#s on my bathroom scale. I scooped out a sample and weighed 8oz of primers, then counted them. 1,033/8oz. My scoop contained a fair amount of the "dirt" so I think it's a fair reprentation.
Rounding down to 2,050/lb that's 67,650. Given the inaccuracy of the bathroom scale let's say 65,000.
This was over a 5 year period, so we're talking less then 1,000 a month. But maybe time to repeat the experiment.