This last calf I had was out of an I 80 heifer and bpf comfort zone calf might have been 75 lbs no bigger cow wasn't fat at all ... Last time carpe Diem cow had and I 80 calf that was 75lbs needed pulled time before that out of a herd bull the heifer ended up having a 130 lb calf and that's the most maternal cow we have .. Time before that my drifter heifer(Ali son) was bred to a pb Angus bull calf weighed 70 lbs calf needed pulled but we got here right as it came out so still saved it. Time before that was my first heifer dirty girl and her first calf was 110 out of carpe Diem (probably my fault on that one) but at the same time her walks alone calf was only 80 lbs lol..... Point is what if a full proof breed that a calf could come out sideways with no problems don't care what they weigh or how fast they grow just want something alive and that I'm more than likely not gonna have to pull