Hornady Rifle Cartridge Cases 7mm PRC Unprimed 50 pk.Hornady cases offer reloaders excellent uniformity in wall thickness, weight and internal capacity. Hornady measures for consistently tight wall concentricity and even run the cases through a pressure calibration test to ensure uniform case expansion during firing. Hornady cases allow proper seating of the bullet, not only in the case, but in the chamber as well. High quality brass contributes to consistent charges and pressures.