I suppose one could check their primers visibly by getting them anvil side up/cup side down and look for the anvil and any difference in color under the anvil that might be a lack of priming compound. It would only take a minute or two to inspect 50 or 100 of them. If you seat primers with a tube primer magazine, you have to have all of the primers cup up or cup down to load the tubes, anyway, so not hard to do if you were so inclined because of primer failures in your history.
I might do this if I was loading for serious carry or loading hunting ammo for a big hunt. I don't know if this would give any realistic help but at least you would feel better about your primers.