from a calgunsnet: 9mm with headstamp PAPA will not chamber
I have had some issue with some brass chambering in my new S&W M&P compact 9. Same brass chambers in Beretta 92FS no problem.
Have have identificed I few of the offending cases and they have headstamp PAPA. See photo. I can not ID them for sure but I think they might be Japan made.
They are clearly minimally larger at the base. Fully length resize will not make them chamber in compact 9.
Is this Japan made brass for specfic pistol. I have but a few and I'm going to toss them out.