You sorta can do it. Since the "dirty thirty" is a tapered case, you run into really big problems fast with long bullets. You have probably noticed how weird the case looks when you seat them, even just a hair, too deep. So now the question begs, what are you shooting it in, and what kind of bullets. If they are 130g RN, you'll have no problem, even with the deep seat. If you are shooting a T/C or and exceptionally long throated .30 M1 Carb, no problem. If they are spire pointed and the T/C, just load them long, and spire pointed on and M1 you'll have to hand feed them one at a time. Hope that helps