Yes a calf up around 300 is quite possible. Looking into my photo album here where i have the weight of each animal along with a picture of the 3 bull calves i have taken it reads 204, 208 and 212 lbs. That is hide, head, guts removed and bottom of legs sawed off. So if i was a betting man i would bet all of these calves were over 300lbs on the hoof.