Second post. I have a couple of 75B SAs, 40 S&W. I installed a Cajun bushing on one of them. With the new tighter bushing, the last round in the mag is not ejecting properly and deforms the case mouth. I put the barrel from the 2nd gun into the first and it still mangles the case. Only the last round from the mag. Tried different loads with several bullet types and same result. Tried different mags, same thing. Substituted a different slide stop, same. Put the original bushing back in and problem goes away. Any ideas?