I think he is considered calving ease compared to Heat Wave. I have used him on a few Angus heifers and got along okay, but would not use him on clubby type heifers. I have used a Who son called Total Solution, maybe a little better luck with him. However, I had to pull one yesterday morning that was backwards(calf would have been okay in size if he had been coming the right direction) and did not make it. That seems to be my question of the day. I seem to have more trouble with calves being backwards than calves being to big? What causes this?