Thanks for all of your response. I bought a EGW case gauge and did some investigating. Between 9mm, 38's 45's and 40S&w, the 40S&W raw expended range brass expanded the most. None of them will fit in the case gauge. BUT After running the 40S&W thru my handy Lee Carbide sizing die all of the 40S&W brass slides easily into the case gauge. Question answered.