Robert, I think you missed the point of the question. I would think that a .358 gas checked bullet would go thru a .356 die however the hardness of the lead would have a lot to do with the force nessesary to do this I have never tried it . But I have had dies in sizes such as .3555, .356, .3565, .357, .3575, .358, and .3585 so one can get sizing dies in nearly any size desired. Now I don't know if Lee makes these sizes I only know about Saeco and Star (Magma) Wes