I have spent the better part of two hours searching the Intenet and its forums for references to failures to fire regarding the Remington Golden Sabers, the Speer Gold Dots, and the Wnchester Silvertips -- my three favorite brands of ammunition. I have found all sorts of comments, pro and con, on each.
I have also researched primers used in each of the three brands mentioned above -- although the manufacturers tend to guard that informtion as proprietary and one is left to anecdotal reports of the various forums.
What I have determined is that primers seem to be "fungible" in the present market and that when you purchase any of the aforementioned brands for your R9, it is best to test a magazine of cartidges from the box, make notice of the lot and results, and go forward. Also, make certain that your R9 (or other weapon) is clean (especially the firing-pin channel), that the firing-pin spring is full strength, and that the pistol's slide/frame interface is clean and well lubricated. (FrogLube comes to mind.)
Bottom line -- as the current jargon goes, keep your R9 clean, determine what works best in it, and stay with whatever works . . . provided that you can find the ammunitation to make the test these days.
Hell, it's getting so bad in this market that I'm going back through my gun safe to examine and hand-polish individual cartidges. In that process, I've found an almost full box of lead-nose .32 Long Colt I didn't know I still had and for which I no longer even own the revolver. (Does anyone remember those?) Now I'm thinking of calling the friend to whom I sold that Colt and increasing the return on my investment.
[Edit: Spelling errors.]