if you have a purebred black angus bull, the vast majority of the calves will be pure black, there will be a few black calves with a white strip on their back and a few spotted ones. there will be a few with horns and a few will be light boned, but most will be polled and good angus body make. with the angus bull, you wont have any calving problems. if you breed them to a charlois the calves will also be consistent and they will grow bigger than the angus----both the angus and the charlois will bring about the same amount per pound at the same weight out of the longhorn cows.