9mm with headstamp PAPA will not chamber

[ronas]

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.

[sequoia_nomad]

Looks a little long, have you checked overall length?

[ronas]

OAL is fine.

It just looks long because it doesn't go completely into the Dillon case check gauge I photo'ed it in.

[Ninja45]

9mm are so plentiful. Toss away those that are not within specs.

[ireload]

Check the rim of the brass. A slight burr can cause it not to go in the case gauge after it's been sized. I've encountered several from 1k of 9mm brass once. I just use a miniature file to remove.