Haven't tried any S&B 9MM, but did have a negative experience with S&B .223 ammo back around 2009, when ammo was difficult to get even for PDs. Does this sound familiar? Anyway,our Rangemaster had ordered a quantity of S&B .223, because that was all he could actually get at the time for training. He told me officers had been having failures to extract and he wasn't buying anymore. Within the first magazine, the S&B failed to extract twice in the Dept. M-16 I was issued. The officer next to me had a failure to extract in his rifle immediately afterwards. The rifles were clean and lubed. We had just started qualifications, were shooting semi-auto, and the rifles were not heated up from full auto fire, etc. We could not extract the fired cases until we knocked them out with steel cleaning rods. The rifles gave no trouble with Winchester, Remington and Federal ammo. I have never personally purchased any S&B, and have no plans to unless the ammo situation gets a lot worse than it is now...ymmv
BTW, I carried the P226 every working day for several years. I don't ever recall having a malfunction with any factory Winchester, Speer, Federal or Remington ammo, or my own reloads. I don't think it's your gun......