Starline cartridge cases are well known for their exceptional quality and construction. Using detailed build procedures for their brass ensures higher concentricity in each case that will ease bullet seating and rounds seating in your chamber. These cases ensure very tight tolerances in their case wall thickness to produce the most accurate ammunition possible. Starline's unique case creation allows the user more reloads and guarantees virtually identical cases from lot to lot. Specifications and Features: Tight tolerances for concentricity Controlled wall thickness Correct sizes lot to lot Large Pistol Primer 100 Count