I have had 3 Chopper calves this year. 2 were around 80 lbs but had a 100 lb bull that was 4 days late and super stout. Cow he is out of his an older 7 FS 1700 lb Power Drive cow. He would have killed a heifer. She had him by herself. I have had cow 3 years and her last 2 calves were 75 lb heifers out of DHF Jades Dreamworks and Limestone Darkhorse. But this calf is the best calf she has had yet. I am pleased with all my Chopper calves but will ever use him on heifers. His calving ease number has went way down and my limited experience would agree.