An automatic ammunition reloading system includes an actuation assembly in communication with a control system. The actuation assembly is joined to a reloading press by attaching to a control lever of the ammunition press so as to put the reloading press in operative relation with the actuation assembly. The control system receives input from a control lever position sensor to sense an extremity position of the control lever and to determine an actuation distance of the control lever for a full stroke of the reloading press. The control system controls operation of the actuation assembly so as to oscillate the control lever through the actuation distance.