We had one the other day, about 85lb bull calf, looks nice so far, the cow went one day before her due date, I was told to not let them go over their due dates or they could be big, just like anything clubby can be.
We've only had one out of a first calf heifer, came easy, unassisted, heifer calf, probably around 65lbs
We've had a few out of cows and they have been small as well, probably around 65 to 70 pounds