I have seen two. One was out of Red Brockle simmi influenced cow and the other was out of an angus female. Both were on the small side. They didn't have tremendous bone. The best in that group I saw was a Double Vision on a Heat Seeker female. Clean female of course. If I were going to use anything on those angus cows, I would use Pale Face, If they are sound and are of good size, WMW or if you want replacements Simmi- Dream ON or 3C Macho. Just an opinion. On pale face cow you could use WMW or son like Doctor Who. I have a Partisover 550 Daughter 132K x Doctor Who bull calf. Really like him Lots of bone and getting thicker every day.