Swaging Mil primer pockets for 5.56 and 7.62/51. I assume 7.62/39 would suck too but I don't have one of those.. Trimming isn't so bad.. Dillon trimmer on a 650 is pretty simple and nearly automatic.. It's almost worth having a 1050 with the primer pocket swager for 223/5.56.. almost, but not quite.