Yes I guess if I would loosen the expander stem and turn it down till needed then it would work. But this is something that need not be done if you are depriming spent primers.Manual in such a case is ok. I made a mistake and paid the price. I believed the case to have a spent primer and it did not. Accidents happen. I posted this to make others aware of the strength of live primers. I didn't think that a live primer could have this much power. I found out the hard way.