The 300 Winchester Short Magnum (WSM) stands among the most successful modern cartridges developed in recent years. Berger Bullets’ 4PH7080C unprimed cases deliver the same energy as a 300 Win Mag while fitting into short action rifle designs, offering distinct advantages over traditional belted magnum cartridges. The 300 WSM design incorporates enhanced rigidity, shorter bolt throw, a compact powder column, and reduced weight—all characteristics that improve performance in hunting and competitive shooting applications.
Each box contains 100 unprimed rifle brass cases, ready for handloading. These Berger Bullets cases are engineered to maximize the potential of your 300 WSM reloading projects.






