If I may, your being familiar with is incorrect. There is absolutely no these kinds of detail a 'difficult' or 'delicate' primers. Mil spec primers are magnum grade and less delicate to your firing pin strike. Occasionally on loose pockets you can ponder in case you even seated a primer. https://simonwoona.aboutyoublog.com/34374039/detailed-notes-on-federal-primers-large-pistol