This single-stage press features our exclusive Lock-N-Load technology in the ram. With it you can turn your shell holder over to ram prime, then move the shell holder to the top plate. Once the holder and ram prime are set, they stay that way. A quick change to a Lock-N-Load bushing makes switching over from ram prime to die use faster, too. Together, these features will significantly speed up and improve your .50 caliber BMG reloading. Solid construction ensures years of reliable reloading.