We bred Rocky to one of our angus based heifers last year and have the nicest heifer calf ever! We have used him on all of our heifers with only one slight pull - all of the calves have been small, none more than 55 pounds. I would highly recommend him. From our breeding, he produces more heifers than bulls. One of the bull calves we had, was res. grand champ at a neighboring county fair. Gm