Say anyone ever have any trouble with S&B ammo not firing in your R9? Hard primers maybe? I was putting the R9 through the paces and had to strike some S&B several times to get it to fire. I have a bag of mismatched ammo that I use for general practice of every brand imaginable, some of it somewhat old. Could this be an ammo prob or a firing pin spring prob? I also tried some Win Stips and that will be my new carry ammo for this gun. I had several FTF's(not w/Stips) but I strongly believe it is a mag spring problem, I am calling Maria tomorrow to get new mag and recoil springs.