I've got about 500 cartridges built with range brass from a local cop range. The brass is mostly a variety of popular brands like Speer and Federal and all are in excellent condition after cleaning. The cartridge build is either an Acme or Precision 125 grain where both are 125 grain, hi-tec coated, and mic at .356". The OAL on both are 1.30", the powder is W231, the primers used are Federal and Winchester. The dies are Lee carbide and a Lee taper crimp die was used (not the Lee FCD). These completed rounds fire well in a Ruger APCompact, and also a TNW ASR PCC, and a Ruger PCC, all with pretty good accuracy. There are no high pressure indications on the spent cases. There were a few FTE stovepipes. Here are the cartridges and a Lyman 9mm gauge ...
... here's the Acme cartridge failing in the Lyman gauge ...
... and the Precision cartridge failing to a lesser extent ...
I also ran these failed cartridges in a Lee 9mm FCD. No change, they all fail the same.
Here's the cartridges plunked in the RAPc chamber ...
... factory Speer 9mm round that worked fine in the Lyman gauge ...
... handload I built using new Starline brass with powder coated lead 125 grain bullet that also loaded fine in the Lyman gauge ...
Is this the "Glock bulge" issue with these cartridges, and if so, are they okay to keep shooting or is there a 9mm cartridge bulge buster fix?