I would disagree with 50 degrees. Aging is suppose to be between 33 and 37 degrees at a set humidity. You can get away with it for a day at 50 but it is not aging
there is a fine line between aging and rotting. colder than that and it freezes but not aging. I debone the whole animal there is no need for cutting bone and getting
fragments in the meat. Hand grinding can be done but an electric one is much nicer.