Originally Posted by
m4brian
Walther's and HK's with stepped chambers supposedly have problems extracting steel cased ammo. But, I have heard of guys running thousands of rounds of steel with no problems in a P 99 for example i've shot a couple hundred rounds of American steel in my P 99's without an issue . But American steel is the sparkler of 9 mm ammunition. However, I did get a federal aluminum 9 mm case stuck in one of my P 99's, and I also had a Blazer brass with no charge. I blame quality control and not the type of ammunition.