The Starline Brass Star9EUP100 is an exceptional product for 9mm Luger enthusiasts. This particular cartridge is notorious as the 9mm Parabellum and 9x19mm, solidifying its position as one of the well-loved and widely used pistol cartridges across the globe. However, it is important to note that these are not designed for usage in S&W Shield pistols when near-max or +P loads are involved. This is due to their inadequate support in a poor chamber condition.