The ones stating the large rifle primers are deeper are correct and will sit proud in a pistol case. But I have compressed them enough with seating on press so they sat flush, as an experiment, and they did work. I was checking some stuff on a Desert Eagle at the time and didn't have any large pistol primers handy, so used some large rifle primers and squished the heck out of them to get them flush. I did not load them the rest of the way; just used them alone on the case to test and see if the DE would fire off a rifle primer.