This isn't really relevant to this specific instance, because it's so extreme.
But when the .17 Hornady Hornet first appeared, some of the Hornady ammo had VERY shallow primer pockets. If you seated standard SR primers, the case wouldn't even come close to chambering. This was back when the factory ammo (believe it or not) was almost as cheap as handloading--and bunch of prairie dog shooters bought cases of ammo, then sold the once-fired brass.
I bought somewhere around 300 pieces of such brass on the Campfire Classifieds, for a very good price. But when it showed up, it turned out to be the shallow-pocket brass. I solved the problem by sizing/depriming all the brass, then putting a primer-pocket reamer in a drill-motor and running it into every case, which didn't take all that long. They worked fine, and am still using the brass.
But what I've wondered ever since is where in hell Hornady got the "shallow" primers!
