When I participated in the ASA sire test in the late 70's, we sent 50 units of semen to be used in the Padlock Ranch herd, I believe in Wyoming. The cow/heifer herd was black white face. The steers were evaluated at weaning and sent to a commercial feedlot near Brule, Nebraska. All performance and carcass data was gathered. If I remember correctly, the bulls entered in the test generally had 15 or more steer calves on test. The owners of the bulls bought the calves and received the income from them when sold minus expenses. Sometime I need to look up the data in my old magazines. I know Merle Welch used the information on some of his bulls, such as 3W Payoff, for some time in his advertising. Since there is semen around on many of the bulls that were used in the old ASA sire test, I think it would be interesting to use some of it to compare the bulls of today with those of 40+ years ago. Good luck finding a commercial herd large enough and willing to AI 50 females of similar breeding to 20 or more different bulls, though. Sometimes we have to realize the information we gather may not be perfect, but it's the best we have.