I have been making some new 22 dasher cases and didn't think I needed to check the load for pressure as with my last lot I went half a grain over what blew this primer, we all know what an assumption is though, I should have known better
no damage done but I nearly needed a hammer to open the bolt
the only change was a new batch of cases
so the moral of the story is to check for pressure when you make a change in your reloads
obviously these lapua cases are heavier