never saw any information on this topic, anyway every time I open a primer tray many are wrong way up, I pick up the ones I can use and then use masking tape over the upside down ones and flip it over, simple and they are easy to handle
just checked Cabelas they do not show it, do wholesale sports have them?
I keep long tweezers on the bench as well.
Sumtimes one primer will have a tendency to frustrate me.
Laddies up above jesting 'round agin.



























