Tried Winchester 9mm BEB once in my Maddi Cadet - had a lot of FTF's and several jams. Two went "pffft!" - half the primer cup was gone, and no bang! Another round had the primer sideways in the case. Last box of Winny 9mm I ever bought.
Many boxes of UMC ran flawlessly, before and after.
I've used S&B's rifle ammo, and it has always been very good.