I have a Hornady Lock-N-Load Progressive Press, and am using Redding 10mm/.40 Titanium Carbide Pro-Series Dies. My problem is that every other case I resize/de-prime, ends up with a wrinkle at the bottom - close to the neck. Is this caused by something I am doing wrong, or is it cheap brass? The brass is once fired, and was loaded from the factory with frangible ammo for my sheriff's office. Any help with this matter would be GREATLY appreciated. I would also love any other tips for .40 reloading that ya'll would feel appropriate.