Hi,
I was wondering if anyone knows what might be causing this?
These are first time shot 9mm Luger Winchester cases, shooting 140gn lead projectiles at around 860fps through a Sig Sauer P226.
I don't seem to have any issues with case extraction, the ejector print on the cases seem to be in a different location for each case, and there's no visible signs of any damage in the chamber - so at this stage I think I can rule out damage in the chamber.
The brass was gauged after reloading, prior to shooting.
One of the guys at the range reckons it might be a bad batch of cases, but I was wondering if anyone else has seen this before. Most splits I've observed normally occur at the end of the case, not in the middle like this.
Also - do you think this could be causing damage to the gun? Is it safe to shoot off the existing rounds that I have loaded. At this stage I'm seeing around 1 in 30 like this.