.50 Alaskan Load Data

The .50 Alaskan is a powerhouse wildcat cartridge designed for extreme penetration and stopping power in lever-action rifles, making careful, well-informed reloading essential. Built from expanded .348 Winchester brass, it operates at moderate pressures but generates heavy recoil and significant energy, so case preparation and consistent load development are critical. Reloaders should pay close attention to brass annealing, uniform trimming, and proper neck tension to ensure reliable bullet grip under recoil, especially in tubular magazines.

Typical bullet choices range from 400–525 grain hard-cast, jacketed flat-nose, or monolithic designs. Because of its capacity and large bore diameter, the .50 Alaskan performs best with slower powders that deliver stable pressure curves. Incremental load workups are mandatory, as small powder changes can produce substantial velocity increases. Crimp quality—often a heavy roll crimp—is vital to prevent bullet creep.