Have used it so far to check maybe 200-some cases. Found two that found their way into the trash. I have set the standard that if the big end goes even halfway into the primer pocket, that case gets the axe. I s'pose the loosie-goosies could be used in a bolt-action rifle, but I have so many cases there's no reason to be a cheap batsard.I'd say it's a good use of the money spent. Instills confidence that your primers will not back-out upon firing...
I found a new brass I've never seen before. It's a WIN•USA product, marked 5.56mm. Obviously a military loading. Obviously just right there, waiting for us to reload it to the same specs...