I want to order noe exp plugs to load 9mm with .357 and.358 cast boolits. My question is the first number the diameter or the last number? They have a .355 by .351 and a .356 by .352. Do I want these? They also have .359 by .355 and .360 by .356. Are these the ones I want? I am trying to keep .002 for neck tension.