Help me to understand. We visited the Line 1 Hereford facility in Montana last year. Very nice people and they are doing some great work. I received their flyer the other day on their latest bulls for sale. Now the EPD definition for YW according to Genex is "the adjusted yearling weights of a bull's progency when compared to breed average". I took the first bull on the Line 1 list for sale, 44014030. The YW EPD for him was 80. According to the EPD graph that put him in the 65% spot. His 361 day weight was 714 LBs. Now again according to his EPD graph his mature cow weight was in the lowest 5%. So line 1 Herefords are smaller in size which I fully understand. But how can one expect his offspring to be 80 lbs heavier as yearling when the cow weight is in the lightest 5% and his yearling weight is essentially 714 lbs? From my understanding I thought OK this bull should in theory add 80 lbs. to my yearling with a .31% accuracy. Where am I wrong? This is in no way a criticism of Fort Keogh but it was so blatant I feel I must be misunderstanding something. Thanks and be patient with me.