I've tried 3 or 4 mags of Hornady C.D. in my R9s with no apparent problems, but have followed the issues that other forum members have suffered thru. The ammo I have is not from the problem lot.
Hornady makes pretty good products, but they are at the mercy of primer shortage like the rest of us mortal handloaders, and I think that's at the root of Hornady's problem, at least for ammo - sensitive guns like the R9 (& other small pistols).
I've just re-read an article from the September 2009 issue of American Rifleman magazine. They compared Hornady Critical Defense ammo with Winchester PDX1. PDX1 has been available only to L.E., but now is being sold to the civilian market. (Winchester thinks enough of PDX1 that they're discontinuing STX, which replaced the notorious Winchester Black Talon.
What attracts me to Winchester ammo - other than the fact that I used Silvertip for years, is that Winchester makes all of their own components - including primers. In fact, Winchester primers are my favorite brand for reloading. i just cannot find them lately.....
I did a quick search of the Forum archives, but didn't turn up any hits on Winchester PDX1.
Question: Has anyone used PDX1 in their R9?
Steve