With the genetics we started with 60 years ago, by adding Leader 21 and 9 to the mix it was still a stretch to get mature cow weights to 1,250. You have to remember common cows weighed 1,000 or less at the time. My first year in 4-H, in the mid 60.s, the minimum weight for a market steer at the county fair was 850 pounds. The heaviest steer at the fair weighed 1,035. He was the only steer over 1,000 pounds. Minimum weight stayed at 850 pounds for many years after that. Towards the late 60's and early 70's we started seeing some performance testing advertised. 1,000 pound yearling weights were starting to become kind of a benchmark for top performance. I still remember an advertisement for a Leader 21 son, I believe it was Kinnaber Leader 3rd, in which the owner stated he was not so much interested in the first 1,000 pounds of an animal, but the second. Later in the 70's, we bought a bull named Nugget's Max that had sired a bull that gained over 4.0 pounds per day at the IBIA (Iowa Beef Improvement Association) test. I would use him today if I could. He was moderately framed, deep bodied, well muscled, and sired some absolutely great females. He was one of those rare animals that had growth and performance in a relatively small package by today's standards.