I used him on 2 heifers last year and they calved this spring one heifer calf and one bull calf. we had to pull the heifer calf. both of them came around 90 pounds which is bigger than what i had expected. but they hit the ground running both nursed within 45 minutes of birth and both are growing really well and are looking like they are gonna be good feeder animals for us they are the two fastest growing calves in the pasture.
i know its a small sample size but i hope it helps