Used him on some New Deisgn females. I'd suggest using him on a heavier boned female, whos clean & extended through her front, laid in neatly to her shoulder, and softer in her rear flank (he likes to cut up quite a bit). Also, I'd make sure the female is structurally correct, specifically in her rear wheels, I saw a handfull that were sickle hocked. Aside from that, calves were fast growing, and females that I retained are making good mommas.
-Sam