Are you sure resizing is the problem ? If so try resizing one or two and see if that solves it. The reason I ask is the problem I have had with the new modern guns is they have little or no throat , the bullet , especially long 147 grain ones run into rifling and keep the round from seating. You may need to seat the bullet a little deeper to get them to chamber. I had to do this on a few boxes before I got the depth correct for three different recently made 9 mm's . Oddly enough a WWII era Walther P-38 with a nice throat and generous wartime tolerances will chamber anything...even 158 grain cast SWC's ! The new ones.....forget it !
Gary
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