Have 5 so far this year. Very easy calving from mature cows. Cows are mostly angus, some of the calves are a little taller and more racey than what was expected. One is a little finer boned. Very nice calves though. We saw Hairy Bear today at Hawkeye, Other than being a little weak behind the shoulders, he looked good. jmo.I would use him on thicker and more moderate cows.