Damn,,,

,,, Vlim,,,,,,, you got me. Failure to pay attention to detail. However, let me fix it. Here's some sources for .30 Luger;
www.grafs.com or
www.midwayusa.com. On the bad side, it's a little more expensive, on the plus side, there really hasn't been a shortage of it once you find a source. BTW, Welcome to the forum.