Dun We have weighed calves for years and have found that cow families have as much if not more to do with birth wt than bulls. It is my theory it is far better to have a cow that can have a calf unassisted than one that has a small calf. Too much of any thing is too much, and too little is too little. 1961 has proven that his daughters can have calves and he sires calves that can be born. His CETM and CED bear this out. Few Bulls of any breed can due this, and leave good hands off cattle behind. A bull is usually 10 years old before you know if he is any good or not, 1961, EXT, 6807. They work!